Hi, I would like to create two new tables, old_issues and old_reserves, that would be used to store completed checkouts (issues) and hold requests (reserves). Similar to how tables like deleteditems function, whenever a checkout or hold request transaction is completed or canceled, the row representing it would be moved to old_issues or old_reserves respectively. I believe doing this would have several advantages: 1. The issues and reserves tables would cease to grow indefinitely; instead, they would have only as many rows as needed for a library's peak number of transactions. It is my hope that this would improve performance, particularly when processing long hold queues. 2. It would become possible to add a unique key constraint on issues.itemnumber (as an item can be issued only once at a time). Similarly, it may become possible to add unique key constraints on reserves. 3. Some queries and joins would be simplified. Perl code and ad-hoc reports could rely on a conceptually simpler notion that if a row is present in issues or reserves, it represents a current or otherwise active transaction. 4. Koha administrators could safely archive or truncate the old_issues and old_reserves tables if they desire to remove or completely anonymize circulation history. Thoughts? Regards, Galen -- Galen Charlton Koha Application Developer LibLime galen.charlton@liblime.com p: 1-888-564-2457 x709