I can't understand why the document say "PostgreSQL is an object-relational database management system"?Can somebody tell me the reason, or give me some article about this question.
Thanks a lot.
- I'm a beginner of database(and also beginner of postgresql. :D）.
- I implemented a service that provide several restful APIs for app. The logic of APIs all implement in plpgsql function, and app access them through nginx.