Migration and conception

Migration of databases  : ETL , development or upgrade to an earlier version Conception of data model : ERD

Oracle 7-12

Installation, backups but also more advanced setting like  DataGuard, Oracle Stream and golden gate.

Installation RAC and troubleshooting .  Tuning and   development

Postgresql 8.x – 12.6

Postgresql is an  OpenSource database licenced under  BSD. Regarding the performances, PostGreSQL  is as good as Oracle and it has several advantages It can use embedded programming languages  : python, perl, pl/pgsql,it is free and it exists a paid support, the LOB are better implemented and managed, the architecture is simpler,  partitionning is included without extra fee, …