Avantsys

Capabilities

Data Platforms & Geospatial Engineering

Data architecture, relational database engineering, and a differentiated geospatial capability: from spatial data modeling to complete location-intelligence platforms.

Database engineering

  • Data architecture
  • Relational design
  • Oracle Database
  • PostgreSQL
  • SQL Server
  • Query optimization
  • Stored procedure analysis
  • ETL and ELT
  • High availability
  • Backup and recovery
  • Audit trails

Data migration & modernization

  • Database modernization
  • Data migration
  • Schema redesign
  • Migration validation
  • Reconciliation strategies
  • Low-downtime migration planning where feasible

Geospatial engineering

  • Geospatial application architecture
  • Geographic information systems
  • Spatial databases
  • Oracle Spatial
  • PostgreSQL/PostGIS
  • Spatial data modeling
  • Coordinate systems and SRIDs
  • Spatial indexes
  • Geometry and raster data
  • Geocoding
  • Routing and proximity analysis
  • Coverage and service-area modeling
  • Spatial APIs
  • Large-volume spatial processing
  • Geospatial dashboards

Oracle Spatial to PostGIS migration

One example of our broader modernization capability: migrating Oracle Spatial workloads to PostgreSQL/PostGIS through a controlled process. Feasibility depends on the proprietary functionality in use, dataset size, availability requirements, and application coupling — which is why everything starts with a compatibility assessment.

  1. 1.Discovery of Oracle Spatial usage
  2. 2.Inventory of geometries, indexes, functions, and procedures
  3. 3.Compatibility assessment and mapping to PostGIS equivalents
  4. 4.SRID and coordinate reference system validation
  5. 5.Geometry conversion and spatial index redesign
  6. 6.SQL and PL/SQL transformation
  7. 7.Application query adaptation
  8. 8.Performance benchmarking
  9. 9.Data reconciliation
  10. 10.Migration rehearsal and cutover planning
  11. 11.Rollback strategy
  12. 12.Operational validation

We do not promise one-to-one compatibility without evidence, nor universal automatic migrations: each workload is assessed technically and economically.