**Parent Issue**: #119 This sub-issue is for: **Advanced developer** handling PostGIS migration ## Acceptance Criteria ### Database Setup - [ ] PostGIS database is properly configured and accessible - [ ] National Acquisition Boundaries data is successfully migrated without data loss - [ ] Spatial indexing is implemented for optimal query performance - [ ] Database connection from QGIS works reliably ### Data Integrity - [ ] All spatial geometries are preserved accurately during migration - [ ] Attribute data remains complete and properly typed - [ ] Coordinate reference system (CRS) is correctly maintained - [ ] Data validation confirms no corruption or missing records ### Integration & Performance - [ ] QGIS can query and display data from the database efficiently - [ ] Database supports concurrent access for multiple users - [ ] Backup and recovery procedures are documented - [ ] Migration process is documented for other data layers