SQL advanced is leading now a days. SQL is a platform independent and is being used in almost all the databases.
As you know some of the powerful data bases leading the world are:
Oracle 9i 86% 69%
Microsoft SQL Server 57% 34%
Oracle 10g 54% 32%
Oracle 8i 50% 23%
Microsoft Access 26% 5%
IBM DB2 18% 5%
MySQL 16% 11%
Oracle 8 13% 4%
Sybase 11% 4%
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There may be many other legacy databases like: IMSDB, ADSO, Terradata, Tandem etc. However,all the leading bases are relational, so, SQL is acting as a key role.
So, if you want to success in your future career, you must be strong on SQL.
What are the advanced concepts
I will share in my next posts about all the SQL advanced topics.