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by cryptonector
2415 days ago
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2b) And keep your schema changes as incremental and backwards-compatible as possible. Add new tables, add columns to tables, but don't drop or rename anything. If you need a flag day, in PG terms just setup a new schema, use triggers to sync the two, and migrate your apps to use the new schema -- when they're all migrated, drop the sync triggers and the old schema. |
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