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Database level transactions logs are not generally implemented, but are available for enrollment attributes as of v0.9.4. (CO-95)
Changelogs are created on any change to a supported database table. Changelogs are stored in the active table itself. When a record is updated or deleted, the record is updated accordingly (a deleted flag is set in lieu of an actual delete), and the original record is copied-on-write to a new row in the database.
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