Record versions: consistent read, concurrency control, and undo log This material is only available as a separate download: INTRN-P306-R3.zip. Like this post? Share on: Twitter ❄ Facebook ❄ Email Related Articles Transaction Counters in monitoring tables vs. header page Interesting lesson about DDL and commit Lesson about concurrent updates Atomicity of UPDATEs Lesson about lock resolution, deadlocks and history Author Ann Harrison Published Dec 1, 2005 Category Conference Sessions/2005 Tags Firebird Internals 98 Transactions 27