What is Backup & Point-in-Time Recovery?
Scheduled full snapshots plus a write-ahead log enabling restore to any second within retention. Point-in-time recovery turns “we dropped the wrong table” from catastrophe into a support ticket.
Related terms
Retention & Purge Policy
A documented policy deleting or archiving rows after their useful life, enforced by scheduled jobs. Retention bounds table growth, honors privacy promises, and keeps backups and queries fast.
Audit Trail
An append-only log recording who changed what and when, written by triggers or application events. Audits answer incident questions no snapshot can: intent, actor, and exact sequence of changes.
Managed Database
Storage provisioned inside the builder (BYOB DB, Supabase) without manual setup: credentials land in the project environment and schemas stay inspectable from the workspace.
B-Tree Index
The default balanced-tree structure making equality and range lookups fast without scanning every row. Add one where queries filter, join, or sort — then confirm with EXPLAIN before assuming victory.
Composite Index
One index spanning several columns for queries that always filter them together, ordered most-selective first. A three-column composite beats three single-column indexes on the same query shape.
Partial Index
An index covering only rows matching a predicate, such as live subscriptions where status is active. Smaller, faster, and cheaper to maintain than indexing rows queries never touch.