Fossil

	# Find all revisions which disagree with their line of
	# development about the project they are owned by.
	CheckRev \
	    {Revisions and their LODs have to be in the same project} \
	    {disagrees with its LOD about owning project} {
		SELECT F.name, R.rev
		FROM revision R, file F, symbol S
		WHERE R.fid = F.fid
		AND   R.lod = S.sid
		AND   F.pid != S.pid
		;
	    }
	# Find all revisions which disgree with their meta data about
	# the project they are owned by.
	CheckRev \
	    {Revisions and their meta data have to be in the same project} \
	    {disagrees with its meta data about owning project} {
		SELECT F.name, R.rev
		FROM revision R, file F, meta M
		WHERE R.fid = F.fid
		AND   R.mid = M.mid
		AND   F.pid != M.pid
		;
	    }
	# Find all revisions with a primary child which disagrees
	# about the file they belong to.
	CheckRev \
	    {Revisions and their primary children have to be in the same file} \
	    {disagrees with its primary child about the owning file} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid
		AND   R.child IS NOT NULL
		AND   R.child = C.rid
		AND   C.fid != R.fid
		;
	    }

	# Find all revisions with a branch parent symbol whose parent
	# disagrees about the file they belong to.
	CheckRev \
	    {Revisions and their branch children have to be in the same file} \
	    {at the beginning of its branch and its parent disagree about the owning file} {
		SELECT F.name, R.rev
		FROM revision R, revision P, file F
		WHERE R.fid = F.fid
		AND   R.bparent IS NOT NULL
		AND   R.parent = P.rid
		AND   R.fid != P.fid
		;
	    }
	# Find all revisions with a non-NTDB child which disagrees
	# about the file they belong to.
	CheckRev \
	    {Revisions and their non-NTDB children have to be in the same file} \
	    {disagrees with its non-NTDB child about the owning file} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid
		AND   R.dbchild IS NOT NULL
		AND   R.dbchild = C.rid
		AND   C.fid != R.fid
		;
	    }
	# Find all revisions which have a primary child, but the child
	# does not have them as parent.
	CheckRev \
	    {Revisions have to be parents of their primary children} \
	    {is not the parent of its primary child} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid
		AND   R.child IS NOT NULL
		AND   R.child = C.rid
		AND   C.parent != R.rid
		;
	    }
	# Find all revisions which have a primrary child, but the
	# child has a branch parent symbol making them brach starters.
	CheckRev \
	    {Primary children of revisions must not start branches} \
	    {is parent of a primary child which is the beginning of a branch} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid
		AND   R.child IS NOT NULL
		AND   R.child = C.rid
		AND   C.bparent IS NOT NULL
		;
	    }
	# Find all revisions without branch parent symbol which have a
	# parent, but the parent does not have them as primary child.
	CheckRev \
	    {Revisions have to be primary children of their parents, if any} \
	    {is not the child of its parent} {
		SELECT F.name, R.rev
		FROM revision R, revision P, file F
		WHERE R.fid = F.fid
		AND   R.bparent IS NULL
		AND   R.parent IS NOT NULL
		AND   R.parent = P.rid
		AND   P.child != R.rid
		;
	    }
	# Find all revisions with a branch parent symbol which do not
	# have a parent.
	CheckRev \
	    {Branch starting revisions have to have a parent, if not detached} \
	    {at the beginning of its branch has no parent, but its branch has} {
		SELECT F.name, R.rev
		FROM revision R, file F, branch B
		WHERE R.fid = F.fid
		AND   R.bparent IS NOT NULL
		AND   R.parent  IS NULL
		AND   B.sid = R.bparent
		AND   B.fid = R.fid
		AND   B.root    IS NOT NULL
		;
	    }
	# Find all revisions with a branch parent symbol whose parent
	# has them as primary child.
	CheckRev \
	    {Branch starting revisions must not be primary children of their parents} \
	    {at the beginning of its branch is the primary child of its parent} {
		SELECT F.name, R.rev
		FROM revision R, revision P, file F
		WHERE R.fid = F.fid
		AND   R.bparent IS NOT NULL
		AND   R.parent IS NOT NULL
		AND   R.parent = P.rid
		AND   P.child = R.rid
		;
	    }
	# Find all revisions with a non-NTDB child which are not on
	# the NTDB.
	CheckRev \
	    {NTDB to trunk transition has to begin on NTDB} \
	    {has a non-NTDB child, yet is not on the NTDB} {
		SELECT F.name, R.rev
		FROM revision R, file F
		WHERE R.fid = F.fid
		AND   R.dbchild IS NOT NULL
		AND   NOT R.isdefault
		;
	    }
	# Find all revisions with a NTDB parent which are on the NTDB.
	CheckRev \
	    {NTDB to trunk transition has to end on non-NTDB} \
	    {has a NTDB parent, yet is on the NTDB} {
		SELECT F.name, R.rev
		FROM revision R, file F
		WHERE R.fid = F.fid
		AND   R.dbparent IS NOT NULL
		AND   R.isdefault
		;
	    }
	# Find all revisions with a child which disagrees about the
	# line of development they belong to.
	CheckRev \
	    {Revisions and their primary children have to be in the same LOD} \
	    {and its primary child disagree about their LOD} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid
		AND   R.child IS NOT NULL
		AND   R.child = C.rid
		AND   C.lod != R.lod
		;
	    }
	# Find all revisions with a non-NTDB child which agrees about
	# the line of development they belong to.
	CheckRev \
	    {NTDB and trunk revisions have to be in different LODs} \
	    {on NTDB and its non-NTDB child wrongly agree about their LOD} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid
		AND   R.dbchild IS NOT NULL
		AND   R.dbchild = C.rid
		AND   C.lod = R.lod
		;
	    }
	# Find all revisions with a branch parent symbol which is not
	# their LOD.
	CheckRev \
	    {Branch starting revisions have to have their LOD as branch parent symbol} \
	    {at the beginning of its branch does not have the branch symbol as its LOD} {
		SELECT F.name, R.rev
		FROM revision R, file F
		WHERE R.fid = F.fid
		AND   R.bparent IS NOT NULL
		AND   R.lod != R.bparent
		;
	    }
	# Find all revisions with a branch parent symbol whose parent
	# is in the same line of development.
	CheckRev \
	    {Revisions and their branch children have to be in different LODs} \
	    {at the beginning of its branch and its parent wrongly agree about their LOD} {
		SELECT F.name, R.rev
		FROM revision R, revision P, file F
		WHERE R.fid = F.fid
		AND   R.bparent IS NOT NULL
		AND   R.parent = P.rid
		AND   R.lod = P.lod
		;
	    }
	return
    }

    proc Meta {} {
	# This code performs a number of paranoid checks of the
................................................................................
	# Find all revisions which disgree with their meta data about
	# the branch/line of development they belong to.
	CheckRev \
	    {Revisions and their meta data have to be in the same LOD} \
	    {disagrees with its meta data about owning LOD} {
		SELECT F.name, R.rev
		FROM revision R, meta M, file F
		WHERE R.mid = M.mid
		AND   R.lod != M.bid
		AND   R.fid = F.fid
		;
	    }
	return
    }

    proc RevisionChangesets {} {
	# This code performs a number of paranoid checks of the
................................................................................
                -- revision to aggregate the changeset, counting
                -- them. From the resulting revision/count table
                -- select those with more than one user, and get their
                -- associated file (name) for display.

		SELECT F.name, R.rev
		FROM revision R, file F,

		     (SELECT CI.iid AS rid, count(CI.cid) AS count
		      FROM csitem CI, changeset C
		      WHERE C.type = 0
		      AND   C.cid = CI.cid


		      GROUP BY CI.iid) AS U
		WHERE U.count > 1
		AND R.rid = U.rid
		AND R.fid = F.fid
	    }
	# All revisions have to refer to the same meta information as
	# their changeset.
	CheckRevCS \
	    {All revisions have to agree with their changeset about the used meta information} \
	    {disagrees with its changeset @ about the meta information} {
		SELECT CT.name, C.cid, F.name, R.rev
................................................................................
	# for the changesets found thusly.
	CheckCS \
	    {All revisions in a changeset have to belong to the same LOD} \
	    {: Its revisions disagree about the LOD they belong to} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT U.cid
				 FROM (SELECT DISTINCT CI.cid AS cid, R.lod AS lod


				       FROM   csitem CI, changeset C, revision R
				       WHERE  CI.iid = R.rid
				       AND    C.cid = CI.cid
				       AND    C.type = 0) AS U


				 GROUP BY U.cid HAVING COUNT(U.lod) > 1)

		AND    T.tid = C.type
	    }
	# All revisions have to agree on the project their changeset
	# belongs to. In other words, all revisions in a changeset
	# have to refer to the same project.
	#
	# Instead of looking at all pairs of revisions in all
................................................................................
	# for the changesets found thusly.
	CheckCS \
	    {All revisions in a changeset have to belong to the same project} \
	    {: Its revisions disagree about the project they belong to} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT U.cid
				 FROM (SELECT DISTINCT CI.cid AS cid, F.pid AS pid


				       FROM   csitem CI, changeset C, revision R, file F
				       WHERE  CI.iid = R.rid
				       AND    C.cid = CI.cid
				       AND    C.type = 0
				       AND    F.fid  = R.fid) AS U


				 GROUP BY U.cid HAVING COUNT(U.pid) > 1)

		AND    T.tid = C.type
	    }
	# All revisions in a single changeset have to belong to
	# different files. Conversely: No two revisions of a single
	# file are allowed to be in the same changeset.
	#
	# Instead of looking at all pairs of revisions in all
	# changesets we generate the distinct set of all files
................................................................................
	# changesets found thusly.
	CheckCS \
	    {All revisions in a changeset have to belong to different files} \
	    {: Its revisions share files} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT VV.cid

				 FROM (SELECT U.cid as cid, COUNT (U.fid) AS fcount
				       FROM (SELECT DISTINCT CI.cid AS cid, R.fid AS fid


					     FROM   csitem CI, changeset C, revision R
					     WHERE  CI.iid = R.rid
					     AND    C.cid = CI.cid
					     AND    C.type = 0
					     ) AS U

				       GROUP BY U.cid) AS UU,

				      (SELECT V.cid AS cid, COUNT (V.iid) AS rcount
				       FROM   csitem V, changeset X
				       WHERE  X.cid = V.cid
				       AND    X.type = 0

				       GROUP BY V.cid) AS VV
				 WHERE VV.cid = UU.cid
				 AND   UU.fcount < VV.rcount)


		AND    T.tid = C.type
	    }
	return
    }

    proc TagChangesets {} {
	# This code performs a number of paranoid checks of the
	# database, searching for inconsistent changeset/revision
................................................................................
                -- the changeset, counting them. From the resulting
                -- tag/count table select those with more than one
                -- user, and get their associated file (name) for
                -- display.

		SELECT P.name, S.name
		FROM tag T, project P, symbol S,

		     (SELECT CI.iid AS iid, count(CI.cid) AS count
		      FROM csitem CI, changeset C
		      WHERE C.type = 1
		      AND   C.cid = CI.cid

		      GROUP BY CI.iid) AS U
		WHERE U.count > 1
		AND   T.tid = U.iid
		AND   S.sid = T.sid               -- get symbol of tag
		AND   P.pid = S.pid               -- get project of symbol
	    }
	if 0 {
	    # This check is disabled for the moment. Apparently tags
	    # can cross lines of development, at least if the involved
	    # LODs are the trunk, and the NTDB. That makes sense, as
	    # the NTDB revisions are initially logically a part of the
	    # trunk. The standard check below however does not capture
................................................................................
	# thusly.
	CheckCS \
	    {All tags in a changeset have to belong to the same project} \
	    {: Its tags disagree about the project they belong to} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT U.cid
				 FROM (SELECT DISTINCT CI.cid AS cid, F.pid AS pid


				       FROM   csitem CI, changeset C, tag T, file F
				       WHERE  CI.iid = T.tid
				       AND    C.cid = CI.cid
				       AND    C.type = 1
				       AND    F.fid  = T.fid) AS U


				 GROUP BY U.cid HAVING COUNT(U.pid) > 1)

		AND    T.tid = C.type
	    }
	# All tags in a single changeset have to belong to different
	# files. Conversely: No two tags of a single file are allowed
	# to be in the same changeset.
	#
	# Instead of looking at all pairs of tags in all changesets we
	# generate the distinct set of all files referenced by the
................................................................................
	# information for the changesets found thusly.
	CheckCS \
	    {All tags in a changeset have to belong to different files} \
	    {: Its tags share files} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT VV.cid

				 FROM (SELECT U.cid as cid, COUNT (U.fid) AS fcount
				       FROM (SELECT DISTINCT CI.cid AS cid, T.fid AS fid


					     FROM   csitem CI, changeset C, tag T
					     WHERE  CI.iid = T.tid
					     AND    C.cid = CI.cid
					     AND    C.type = 1
					     ) AS U

				       GROUP BY U.cid) AS UU,

				      (SELECT V.cid AS cid, COUNT (V.iid) AS rcount
				       FROM   csitem V, changeset X
				       WHERE  X.cid = V.cid
				       AND    X.type = 1

				       GROUP BY V.cid) AS VV
				 WHERE VV.cid = UU.cid
				 AND   UU.fcount < VV.rcount)


		AND    T.tid = C.type
	    }
	return
    }

    proc BranchChangesets {} {
	# This code performs a number of paranoid checks of the
	# database, searching for inconsistent changeset/revision
................................................................................
		FROM project P, branch B, symbol S
		WHERE B.bid IN (SELECT bid                    -- All branches
				FROM   branch
				EXCEPT                        -- subtract
				SELECT CI.iid                 -- branches used
				FROM   csitem CI, changeset C
				WHERE  C.cid = CI.cid         -- by any branch
				AND    C.type = 2)            -- changeset

		AND   S.sid = B.sid               -- get symbol of branch
		AND   P.pid = S.pid               -- get project of symbol
	    }
	# Find all branches which are used by more than one changeset.
	CheckRev \
	    {All branches have to be used by at most one changeset} \
	    {is used by multiple changesets} {
................................................................................
                -- aggregate the changeset, counting them. From the
                -- resulting branch/count table select those with more
                -- than one user, and get their associated file (name)
                -- for display.

		SELECT P.name, S.name
		FROM branch B, project P, symbol S,

		     (SELECT CI.iid AS iid, count(CI.cid) AS count
		      FROM csitem CI, changeset C
		      WHERE C.type = 2
		      AND   C.cid = CI.cid

		      GROUP BY CI.iid ) AS U
		WHERE U.count > 1
		AND   B.bid = U.iid
		AND   S.sid = B.sid               -- get symbol of branch
		AND   P.pid = S.pid               -- get project of symbol
	    }
	if 0 {
	    # This check has been disabled. When the converter was run
	    # on the Tcl CVS several branches tripped this
	    # constraint. One of them was a free-floating branch, and
	    # its handling has been fixed by now. The others however
	    # seem semi-legitimate, in the sense that they show
................................................................................
	# for the changesets found thusly.
	CheckCS \
	    {All branches in a changeset have to belong to the same project} \
	    {: Its branches disagree about the project they belong to} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT U.cid
				 FROM (SELECT DISTINCT CI.cid AS cid, F.pid AS pid


				       FROM   csitem CI, changeset C, branch B, file F
				       WHERE  CI.iid = B.bid
				       AND    C.cid = CI.cid
				       AND    C.type = 2
				       AND    F.fid  = B.fid) AS U


				 GROUP BY U.cid HAVING COUNT(U.pid) > 1)

		AND    T.tid = C.type
	    }
	# All branches in a single changeset have to belong to
	# different files. Conversely: No two branches of a single
	# file are allowed to be in the same changeset.
	#
	# Instead of looking at all pairs of branches in all
	# changesets we generate the distinct set of all files
................................................................................
	# changesets found thusly.
	CheckCS \
	    {All branches in a changeset have to belong to different files} \
	    {: Its branches share files} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT VV.cid

				 FROM (SELECT U.cid as cid, COUNT (U.fid) AS fcount
				       FROM (SELECT DISTINCT CI.cid AS cid, B.fid AS fid


					     FROM   csitem CI, changeset C, branch B
					     WHERE  CI.iid = B.bid
					     AND    C.cid = CI.cid
					     AND    C.type = 2
					     ) AS U

				       GROUP BY U.cid) AS UU,

				      (SELECT V.cid AS cid, COUNT (V.iid) AS rcount
				       FROM   csitem V, changeset X
				       WHERE  X.cid = V.cid
				       AND    X.type = 2

				       GROUP BY V.cid) AS VV
				 WHERE VV.cid = UU.cid
				 AND   UU.fcount < VV.rcount)


		AND    T.tid = C.type
	    }
	return
    }

    proc ___UnusedChangesetChecks___ {} {
	# This code performs a number of paranoid checks of the
	# database, searching for inconsistent changeset/revision
................................................................................
	# changeset's tag associated with them.
	CheckRevCS \
	    {All revisions used by tag symbol changesets have to have the changeset's tag attached to them} \
	    {does not have the tag of its symbol changeset @ attached to it} {
		SELECT CT.name, C.cid, F.name, R.rev
		FROM   changeset C, cstype CT, revision R, file F, csitem CI, tag T
		WHERE  C.type = 1       -- symbol changesets only
		AND    C.src  = T.sid   -- tag only, linked by symbol id 
		AND    C.cid  = CI.cid  -- changeset --> its revisions
		AND    R.rid  = CI.iid  -- look at the revisions
		-- and look for the tag among the attached ones.
		AND    T.sid NOT IN (SELECT TB.sid
				     FROM   tag TB
				     WHERE  TB.rev = R.rid)
		AND    R.fid = F.fid    -- get file of revision

	# Find all revisions which disagree with their line of
	# development about the project they are owned by.
	CheckRev \
	    {Revisions and their LODs have to be in the same project} \
	    {disagrees with its LOD about owning project} {
		SELECT F.name, R.rev
		FROM revision R, file F, symbol S
		WHERE R.fid = F.fid   -- get file of rev
		AND   R.lod = S.sid   -- get symbol of its lod
		AND   F.pid != S.pid  -- disagreement about the owning project
		;
	    }
	# Find all revisions which disgree with their meta data about
	# the project they are owned by.
	CheckRev \
	    {Revisions and their meta data have to be in the same project} \
	    {disagrees with its meta data about owning project} {
		SELECT F.name, R.rev
		FROM revision R, file F, meta M
		WHERE R.fid = F.fid   -- get file of rev
		AND   R.mid = M.mid   -- get meta of rev
		AND   F.pid != M.pid  -- disagreement about owning project
		;
	    }
	# Find all revisions with a primary child which disagrees
	# about the file they belong to.
	CheckRev \
	    {Revisions and their primary children have to be in the same file} \
	    {disagrees with its primary child about the owning file} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid       -- get file of rev
		AND   R.child IS NOT NULL -- get all with primary children
		AND   R.child = C.rid     -- get primary child
		AND   C.fid != R.fid      -- wrongly in different file
		;
	    }

	# Find all revisions with a branch parent symbol whose parent
	# disagrees about the file they belong to.
	CheckRev \
	    {Revisions and their branch children have to be in the same file} \
	    {at the beginning of its branch and its parent disagree about the owning file} {
		SELECT F.name, R.rev
		FROM revision R, revision P, file F
		WHERE R.fid = F.fid         -- get file of rev
		AND   R.bparent IS NOT NULL -- get first-of-branch revisions
		AND   R.parent = P.rid      -- get out-of-branch parent
		AND   R.fid != P.fid        -- wrongly in different file
		;
	    }
	# Find all revisions with a non-NTDB child which disagrees
	# about the file they belong to.
	CheckRev \
	    {Revisions and their non-NTDB children have to be in the same file} \
	    {disagrees with its non-NTDB child about the owning file} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid         -- get file of rev
		AND   R.dbchild IS NOT NULL -- get last NTDB revisions
		AND   R.dbchild = C.rid     -- get their child
		AND   C.fid != R.fid        -- wrongly in different file
		;
	    }
	# Find all revisions which have a primary child, but the child
	# does not have them as parent.
	CheckRev \
	    {Revisions have to be parents of their primary children} \
	    {is not the parent of its primary child} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid         -- get file of rev
		AND   R.child IS NOT NULL   -- get all with primary children
		AND   R.child = C.rid       -- get primary child
		AND   C.parent != R.rid     -- child's parent wrongly not us
		;
	    }
	# Find all revisions which have a primrary child, but the
	# child has a branch parent symbol making them brach starters.
	CheckRev \
	    {Primary children of revisions must not start branches} \
	    {is parent of a primary child which is the beginning of a branch} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid         -- get file of rev
		AND   R.child IS NOT NULL   -- get all with primary children
		AND   R.child = C.rid       -- get primary child
		AND   C.bparent IS NOT NULL -- but indicates to be on branch
		;
	    }
	# Find all revisions without branch parent symbol which have a
	# parent, but the parent does not have them as primary child.
	CheckRev \
	    {Revisions have to be primary children of their parents, if any} \
	    {is not the child of its parent} {
		SELECT F.name, R.rev
		FROM revision R, revision P, file F
		WHERE R.fid = F.fid        -- get file of revision
		AND   R.bparent IS NULL    -- exclude all first-on-branch revisions
		AND   R.parent IS NOT NULL -- which are not root of their line
		AND   R.parent = P.rid     -- get in-lod parent
		AND   P.child != R.rid     -- but does not have rev as primary child
		;
	    }
	# Find all revisions with a branch parent symbol which do not
	# have a parent.
	CheckRev \
	    {Branch starting revisions have to have a parent, if not detached} \
	    {at the beginning of its branch has no parent, but its branch has} {
		SELECT F.name, R.rev
		FROM revision R, file F, branch B
		WHERE R.fid = F.fid         -- get file of revision
		AND   R.bparent IS NOT NULL -- limit to first-on-branch revisions
		AND   R.parent  IS NULL     -- which are detached
		AND   B.sid = R.bparent     -- get branch governing the rev
		AND   B.fid = R.fid         -- in the revision's file
		AND   B.root    IS NOT NULL -- but says that branch is attached
		;
	    }
	# Find all revisions with a branch parent symbol whose parent
	# has them as primary child.
	CheckRev \
	    {Branch starting revisions must not be primary children of their parents} \
	    {at the beginning of its branch is the primary child of its parent} {
		SELECT F.name, R.rev
		FROM revision R, revision P, file F
		WHERE R.fid = F.fid         -- get file of revision
		AND   R.bparent IS NOT NULL -- limit to first-on-branch revisions
		AND   R.parent IS NOT NULL  -- which are attached
		AND   R.parent = P.rid      -- get out-of-branch parent
		AND   P.child = R.rid       -- wrongly has rev as primary child
		;
	    }
	# Find all revisions with a non-NTDB child which are not on
	# the NTDB.
	CheckRev \
	    {NTDB to trunk transition has to begin on NTDB} \
	    {has a non-NTDB child, yet is not on the NTDB} {
		SELECT F.name, R.rev
		FROM revision R, file F
		WHERE R.fid = F.fid         -- get file of revision
		AND   R.dbchild IS NOT NULL -- limit to last NTDB revision
		AND   NOT R.isdefault       -- but signals not-NTDB
		;
	    }
	# Find all revisions with a NTDB parent which are on the NTDB.
	CheckRev \
	    {NTDB to trunk transition has to end on non-NTDB} \
	    {has a NTDB parent, yet is on the NTDB} {
		SELECT F.name, R.rev
		FROM revision R, file F
		WHERE R.fid = F.fid          -- get file of revision
		AND   R.dbparent IS NOT NULL -- limit to roots of non-NTDB
		AND   R.isdefault            -- but signals to be NTDB
		;
	    }
	# Find all revisions with a child which disagrees about the
	# line of development they belong to.
	CheckRev \
	    {Revisions and their primary children have to be in the same LOD} \
	    {and its primary child disagree about their LOD} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid       -- get file of revision
		AND   R.child IS NOT NULL -- revision has a primary child
		AND   R.child = C.rid     -- get that child
		AND   C.lod != R.lod      -- child wrongly disagrees with lod
		;
	    }
	# Find all revisions with a non-NTDB child which agrees about
	# the line of development they belong to.
	CheckRev \
	    {NTDB and trunk revisions have to be in different LODs} \
	    {on NTDB and its non-NTDB child wrongly agree about their LOD} {
		SELECT F.name, R.rev
		FROM revision R, revision C, file F
		WHERE R.fid = F.fid         -- get file of revision
		AND   R.dbchild IS NOT NULL -- limit to last NTDB revision
		AND   R.dbchild = C.rid     -- get non-NTDB child
		AND   C.lod = R.lod         -- child wrongly has same lod
		;
	    }
	# Find all revisions with a branch parent symbol which is not
	# their LOD.
	CheckRev \
	    {Branch starting revisions have to have their LOD as branch parent symbol} \
	    {at the beginning of its branch does not have the branch symbol as its LOD} {
		SELECT F.name, R.rev
		FROM revision R, file F
		WHERE R.fid = F.fid         -- get file of revision
		AND   R.bparent IS NOT NULL -- limit to branch-first revisions
		AND   R.lod != R.bparent    -- out-of-branch parent wrongly is not the lod
		;
	    }
	# Find all revisions with a branch parent symbol whose parent
	# is in the same line of development.
	CheckRev \
	    {Revisions and their branch children have to be in different LODs} \
	    {at the beginning of its branch and its parent wrongly agree about their LOD} {
		SELECT F.name, R.rev
		FROM revision R, revision P, file F
		WHERE R.fid = F.fid          -- get file of revision
		AND   R.bparent IS NOT NULL  -- limit to branch-first revisions
		AND   R.parent = P.rid       -- get out-of-branch parent of revision
		AND   R.lod = P.lod          -- rev and parent wrongly agree on lod
		;
	    }
	return
    }

    proc Meta {} {
	# This code performs a number of paranoid checks of the
................................................................................
	# Find all revisions which disgree with their meta data about
	# the branch/line of development they belong to.
	CheckRev \
	    {Revisions and their meta data have to be in the same LOD} \
	    {disagrees with its meta data about owning LOD} {
		SELECT F.name, R.rev
		FROM revision R, meta M, file F
		WHERE R.mid = M.mid   -- get meta data of revision
		AND   R.lod != M.bid  -- rev wrongly disagrees with meta about lod
		AND   R.fid = F.fid   -- get file of revision
		;
	    }
	return
    }

    proc RevisionChangesets {} {
	# This code performs a number of paranoid checks of the
................................................................................
                -- revision to aggregate the changeset, counting
                -- them. From the resulting revision/count table
                -- select those with more than one user, and get their
                -- associated file (name) for display.

		SELECT F.name, R.rev
		FROM revision R, file F,
		     (SELECT CI.iid        AS rid,  -- revision item
		             count(CI.cid) AS count -- number of csets using item
		      FROM csitem CI, changeset C
		      WHERE C.type = 0            -- limit to revision csets

		      AND   C.cid  = CI.cid       -- get item in changeset
		      GROUP BY CI.iid             -- aggregate by item, count csets/item
		     ) AS U
		WHERE U.count > 1    -- limit to item with multiple users
		AND   R.rid = U.rid  -- get revision of item
		AND   R.fid = F.fid  -- get file of revision
	    }
	# All revisions have to refer to the same meta information as
	# their changeset.
	CheckRevCS \
	    {All revisions have to agree with their changeset about the used meta information} \
	    {disagrees with its changeset @ about the meta information} {
		SELECT CT.name, C.cid, F.name, R.rev
................................................................................
	# for the changesets found thusly.
	CheckCS \
	    {All revisions in a changeset have to belong to the same LOD} \
	    {: Its revisions disagree about the LOD they belong to} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT U.cid
				 FROM (SELECT DISTINCT       -- unique cset/lod pairs
				              CI.cid AS cid, -- revision cset
				              R.lod  AS lod  -- lod of item in cset
				       FROM   csitem CI, changeset C, revision R
				       WHERE  CI.iid = R.rid  -- get rev of item in cset
				       AND    C.cid  = CI.cid -- get changeset of item
				       AND    C.type = 0      -- limit to rev csets
				      ) AS U
				 GROUP BY U.cid          -- aggregate by cset, count lods/cset
				 HAVING COUNT(U.lod) > 1 -- find csets with multiple lods
				)
		AND    T.tid = C.type
	    }
	# All revisions have to agree on the project their changeset
	# belongs to. In other words, all revisions in a changeset
	# have to refer to the same project.
	#
	# Instead of looking at all pairs of revisions in all
................................................................................
	# for the changesets found thusly.
	CheckCS \
	    {All revisions in a changeset have to belong to the same project} \
	    {: Its revisions disagree about the project they belong to} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT U.cid
				 FROM (SELECT DISTINCT       -- unique cset/proj pairs
				              CI.cid AS cid, -- rev cset
				              F.pid  AS pid  -- project of item in cset
				       FROM   csitem CI, changeset C, revision R, file F
				       WHERE  CI.iid = R.rid  -- get rev of item in cset
				       AND    C.cid  = CI.cid -- get changeset of item
				       AND    C.type = 0      -- limit to rev changesets
				       AND    F.fid  = R.fid  -- get file of revision
				      ) AS U
				 GROUP BY U.cid          -- aggregate by csets, count proj/cset
				 HAVING COUNT(U.pid) > 1 -- find csets with multiple projects
				)
		AND    T.tid = C.type -- get readable changeset type
	    }
	# All revisions in a single changeset have to belong to
	# different files. Conversely: No two revisions of a single
	# file are allowed to be in the same changeset.
	#
	# Instead of looking at all pairs of revisions in all
	# changesets we generate the distinct set of all files
................................................................................
	# changesets found thusly.
	CheckCS \
	    {All revisions in a changeset have to belong to different files} \
	    {: Its revisions share files} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT VV.cid
				 FROM (SELECT U.cid         AS cid,   -- rev changeset
				              COUNT (U.fid) AS fcount -- number of files by items
				       FROM (SELECT DISTINCT       -- unique cset/file pairs
					            CI.cid AS cid, -- rev changeset
					            R.fid AS fid   -- file of item in changeset
					     FROM   csitem CI, changeset C, revision R
					     WHERE  CI.iid = R.rid  -- get rev of item in changeset
					     AND    C.cid  = CI.cid -- get changeset of item
					     AND    C.type = 0      -- limit to rev csets
					     ) AS U
				       GROUP BY U.cid -- aggregate by csets, count files/cset
				      ) AS UU,
				      (SELECT V.cid         AS cid,   -- rev changeset
				              COUNT (V.iid) AS rcount -- number of items
				       FROM   csitem V, changeset X
				       WHERE  X.cid  = V.cid  -- get changeset of item
				       AND    X.type = 0      -- limit to rev csets
				       GROUP BY V.cid         -- aggregate by csets, count items/cset
				      ) AS VV
				 WHERE VV.cid = UU.cid        -- sync #items/cset with #files/cset
				 AND   UU.fcount < VV.rcount  -- less files than items
				                              -- => items belong to the same file.
				)
		AND    T.tid = C.type -- get readable changeset type
	    }
	return
    }

    proc TagChangesets {} {
	# This code performs a number of paranoid checks of the
	# database, searching for inconsistent changeset/revision
................................................................................
                -- the changeset, counting them. From the resulting
                -- tag/count table select those with more than one
                -- user, and get their associated file (name) for
                -- display.

		SELECT P.name, S.name
		FROM tag T, project P, symbol S,
		     (SELECT CI.iid        AS iid,  -- item
		             count(CI.cid) AS count -- number of csets using item
		      FROM csitem CI, changeset C
		      WHERE C.type = 1       -- limit to tag csets
		      AND   C.cid  = CI.cid  -- get items of cset
		      GROUP BY CI.iid        -- aggregate by item, count csets/item
		     ) AS U
		WHERE U.count > 1            -- find tag item used multiple times
		AND   T.tid = U.iid          -- get tag of item
		AND   S.sid = T.sid          -- get symbol of tag
		AND   P.pid = S.pid          -- get project of symbol
	    }
	if 0 {
	    # This check is disabled for the moment. Apparently tags
	    # can cross lines of development, at least if the involved
	    # LODs are the trunk, and the NTDB. That makes sense, as
	    # the NTDB revisions are initially logically a part of the
	    # trunk. The standard check below however does not capture
................................................................................
	# thusly.
	CheckCS \
	    {All tags in a changeset have to belong to the same project} \
	    {: Its tags disagree about the project they belong to} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT U.cid
				 FROM (SELECT DISTINCT       -- unique cset/proj pairs
				              CI.cid AS cid, -- tag cset
				              F.pid  AS pid  -- project of item in cset
				       FROM   csitem CI, changeset C, tag T, file F
				       WHERE  CI.iid = T.tid  -- get tag of item in cset
				       AND    C.cid  = CI.cid -- get changeset of item
				       AND    C.type = 1      -- limit to tag changesets
				       AND    F.fid  = T.fid  -- get file of tag
                                      ) AS U
				 GROUP BY U.cid           -- aggregate by csets, count proj/cset
				 HAVING COUNT(U.pid) > 1  -- find csets with multiple projects
		                )
		AND    T.tid = C.type -- get readable changeset type
	    }
	# All tags in a single changeset have to belong to different
	# files. Conversely: No two tags of a single file are allowed
	# to be in the same changeset.
	#
	# Instead of looking at all pairs of tags in all changesets we
	# generate the distinct set of all files referenced by the
................................................................................
	# information for the changesets found thusly.
	CheckCS \
	    {All tags in a changeset have to belong to different files} \
	    {: Its tags share files} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT VV.cid
				 FROM (SELECT U.cid         AS cid,   -- changeset
				              COUNT (U.fid) AS fcount -- number of files by items
				       FROM (SELECT DISTINCT       -- unique cset/file pairs
					            CI.cid AS cid, -- tag changeset
					            T.fid  AS fid  -- file of item in changeset
					     FROM   csitem CI, changeset C, tag T
					     WHERE  CI.iid = T.tid -- get tag of item in changeset
					     AND    C.cid = CI.cid -- get changeset of item
					     AND    C.type = 1     -- limit to tag changesets
					     ) AS U
				       GROUP BY U.cid -- aggregate by csets, count files/cset
                                      ) AS UU,
				      (SELECT V.cid         AS cid,   -- changeset
				              COUNT (V.iid) AS rcount -- number of items in cset
				       FROM   csitem V, changeset X
				       WHERE  X.cid  = V.cid -- get changeset of item
				       AND    X.type = 1     -- limit to tag changesets
				       GROUP BY V.cid        -- aggregate by csets, count items/cset
                                      ) AS VV
				 WHERE VV.cid = UU.cid       -- sync #items/cset with #files/cset
				 AND   UU.fcount < VV.rcount -- less files than items
				                             -- => items belong to the same file.
				)
		AND    T.tid = C.type -- get readable changeset type
	    }
	return
    }

    proc BranchChangesets {} {
	# This code performs a number of paranoid checks of the
	# database, searching for inconsistent changeset/revision
................................................................................
		FROM project P, branch B, symbol S
		WHERE B.bid IN (SELECT bid                    -- All branches
				FROM   branch
				EXCEPT                        -- subtract
				SELECT CI.iid                 -- branches used
				FROM   csitem CI, changeset C
				WHERE  C.cid = CI.cid         -- by any branch
				AND    C.type = 2             -- changeset
			       )
		AND   S.sid = B.sid               -- get symbol of branch
		AND   P.pid = S.pid               -- get project of symbol
	    }
	# Find all branches which are used by more than one changeset.
	CheckRev \
	    {All branches have to be used by at most one changeset} \
	    {is used by multiple changesets} {
................................................................................
                -- aggregate the changeset, counting them. From the
                -- resulting branch/count table select those with more
                -- than one user, and get their associated file (name)
                -- for display.

		SELECT P.name, S.name
		FROM branch B, project P, symbol S,
		     (SELECT CI.iid        AS iid,  -- item
                             count(CI.cid) AS count -- number of csets for item
		      FROM csitem CI, changeset C
		      WHERE C.type = 2        -- limit to branch changesets,
		      AND   C.cid = CI.cid    -- get the items they contain,
		      GROUP BY CI.iid         -- aggregate by items, count csets/item (x)
                     ) AS U
		WHERE U.count > 1             -- find items used multiple times
		AND   B.bid = U.iid           -- get the users (branch changesets)
		AND   S.sid = B.sid           -- get symbol of branch
		AND   P.pid = S.pid           -- get project of symbol
	    }
	if 0 {
	    # This check has been disabled. When the converter was run
	    # on the Tcl CVS several branches tripped this
	    # constraint. One of them was a free-floating branch, and
	    # its handling has been fixed by now. The others however
	    # seem semi-legitimate, in the sense that they show
................................................................................
	# for the changesets found thusly.
	CheckCS \
	    {All branches in a changeset have to belong to the same project} \
	    {: Its branches disagree about the project they belong to} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT U.cid
				 FROM (SELECT DISTINCT        -- Unique cset/proj pairs
				              CI.cid AS cid,  -- Branch cset
				              F.pid  AS pid   -- Project of item in cset
				       FROM   csitem CI, changeset C, branch B, file F
				       WHERE  CI.iid = B.bid  -- get branch of item in cset
				       AND    C.cid  = CI.cid -- get changeset of item
				       AND    C.type = 2      -- limit to branch changesets
				       AND    F.fid  = B.fid  -- get file of branch
                                      ) AS U
				 GROUP BY U.cid          -- aggregate by csets, count proj/cset
				 HAVING COUNT(U.pid) > 1 -- find cset with multiple projects
				)
		AND    T.tid = C.type -- get readable changeset type
	    }
	# All branches in a single changeset have to belong to
	# different files. Conversely: No two branches of a single
	# file are allowed to be in the same changeset.
	#
	# Instead of looking at all pairs of branches in all
	# changesets we generate the distinct set of all files
................................................................................
	# changesets found thusly.
	CheckCS \
	    {All branches in a changeset have to belong to different files} \
	    {: Its branches share files} {
		SELECT T.name, C.cid
		FROM   changeset C, cstype T
		WHERE  C.cid IN (SELECT VV.cid
				 FROM (SELECT U.cid         AS cid,   -- changeset
				              COUNT (U.fid) AS fcount -- number of files by items
				       FROM (SELECT DISTINCT       -- unique cset/file pairs
					            CI.cid AS cid, -- Branch changeset
					            B.fid  AS fid  -- File of item in changeset
					     FROM   csitem CI, changeset C, branch B
					     WHERE  CI.iid = B.bid  -- get tag of item in changeset
					     AND    C.cid  = CI.cid -- get changeset of item
					     AND    C.type = 2      -- limit to branch changesets
					     ) AS U
				       GROUP BY U.cid -- aggregate by csets, count files/cset
				      ) AS UU,
				      (SELECT V.cid         AS cid,   -- changeset
				              COUNT (V.iid) AS rcount -- number of items in cset
				       FROM   csitem V, changeset X
				       WHERE  X.cid  = V.cid -- get changeset of item
				       AND    X.type = 2     -- limit to branch changesets
				       GROUP BY V.cid	     -- aggregate by csets, count items/cset
				      ) AS VV
				 WHERE VV.cid = UU.cid       -- sync #items/cset with #files/cset
				 AND   UU.fcount < VV.rcount -- less files than items
							     -- => items belong to the same file.
				)
		AND    T.tid = C.type -- get readable changeset type
	    }
	return
    }

    proc ___UnusedChangesetChecks___ {} {
	# This code performs a number of paranoid checks of the
	# database, searching for inconsistent changeset/revision
................................................................................
	# changeset's tag associated with them.
	CheckRevCS \
	    {All revisions used by tag symbol changesets have to have the changeset's tag attached to them} \
	    {does not have the tag of its symbol changeset @ attached to it} {
		SELECT CT.name, C.cid, F.name, R.rev
		FROM   changeset C, cstype CT, revision R, file F, csitem CI, tag T
		WHERE  C.type = 1       -- symbol changesets only
		AND    C.src  = T.sid   -- tag only, linked by symbol id
		AND    C.cid  = CI.cid  -- changeset --> its revisions
		AND    R.rid  = CI.iid  -- look at the revisions
		-- and look for the tag among the attached ones.
		AND    T.sid NOT IN (SELECT TB.sid
				     FROM   tag TB
				     WHERE  TB.rev = R.rid)
		AND    R.fid = F.fid    -- get file of revision