What is SQL ?
SQL is Structured Query Language, It is an interface between user and relational database. For Relation Database System the standard language is SQL. This language is used for storing, manipulating, and retrieving data stored in relational database using different database object.
1970 — Dr. E. F. “Ted” described a relational model for databases.He is also Known as father of relational database
1974 – Appearance of Structured Query Language.
1978 — IBM to develop Codd’s ideas and released a product named System/R.
1986 — The first prototype of relational database and standardized by ANSI was developed by IBM .