ConstraintManagement

Qunar Tech Salon

Jul 8, 2020 · Databases

Handling Foreign Key Constraint Issues During Data Migration in PostgreSQL/Greenplum

This article explains how to resolve foreign key constraint violations that occur when migrating data from multiple source databases into a target PostgreSQL/Greenplum database by disabling, dropping, or deferring constraints and then re‑enabling them to ensure full data integrity.