@   UNIQUE(pathname,vid)
@ );
@
@ -- This table holds a record of uncommitted merges in the local
@ -- file tree.  If a VFILE entry with id has merged with another
@ -- record, there is an entry in this table with (id,merge) where
@ -- merge is the RECORD table entry that the file merged against.
@ -- An id of 0 here means the version record itself.  When id==(-1)
@ -- that is a cherrypick merge and id==(-2) is a backout merge.
@ -- An id of 0 or <-3 here means the version record itself.  When
@ -- id==(-1) that is a cherrypick merge, id==(-2) that is a
@ -- backout merge and id==(-4) is a integrate merge.
@
@ CREATE TABLE vmerge(
@   id INTEGER REFERENCES vfile,      -- VFILE entry that has been merged
@   merge INTEGER,                    -- Merged with this record
@   UNIQUE(id, merge)
@ );
@