I want to know the difference between SQL, PL/SQL, MySQL, MS SQL?

[polo1978]

I'm trying to learn SQL Language. But I'm confused in which one will be better than the other. I know Microsoft is Popular and interactive but Oracle is more efficient... what you think? what is the difference?... help!!!

[Arundhati Bakshi]

SQL is "Structured Query Language", the language used for fetching info from relational databases, including DB2, Oracle, MySQL, MS SQL, PostgreSQL, etc. There is not that much difference between them for a beginner. MS SQL is Microsoft's database, MySQL is an open source database (best for beginners IMO) , PostgreSQL is another, Oracle and DB2 have the best overall reputations. I use Postgres myself. PL/SQL is the procedural language extension for Oracle.