Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Parents and children of check-in [170711ca]
2002-09-01
| ||
23:20 |
Relax the locking requirements on BTree cursors. Any number of read and
write cursors can be open at the same time now, but a write cannot occur
as long as one or more read cursors are open.
Before this change, one or more read cursors could be open on a table, or a single write cursor, but not both. Both policies have the same desirable effect: they prevent writes to a table while a sequential scan of that table is underway. But the new policy is a little less restrictive. Both policies prevent an UPDATE from occurring inside a SELECT (which is what we want) but the new policy allows a SELECT to occur inside an UPDATE. (CVS 739) (check-in: 8c2a0836 user: drh tags: trunk) | |
2002-08-31
| ||
18:53 | Parse foreign key constraints and populate internal data structures appropriately. Constraints are still not enforced. (CVS 738) (check-in: 170711ca user: drh tags: trunk) | |
17:02 | Version 2.7.1 (CVS 737) (check-in: 5f51e13d user: drh tags: trunk) | |