About SQL DataBase :
(SQL Database eBook pdf) -SQL is a special-purpose programming language designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).
Initially based upon social variable based math and tuple social analytics, SQL comprises of an information definition dialect, information control dialect, and Data Control Language. The extent of SQL incorporates information embed, question, overhaul and erase, mapping creation and alteration, and information access control. In spite of the fact that SQL is frequently depicted as, and, all things considered, seems to be, an explanatory dialect (4GL), it likewise incorporates procedural components.
A full ebook is available you can find link below :