P Prabagaran, 2016. — 77 p. — ASIN: B01I33U2NU
Every one can learn SQL easy-way!
SQL was initially developed at IBM by Donald Chamberlin and Raymond F. Boyce in the early 1970s, initially called SEQUEL (Structured English QUEry Language), was designed to manipulate and retrieve data stored in IBM’s original quasi-relational database management system.