Pl is the short form of procedural language extension of sql which was developed in the 1990,s by the oracle corporation; pl/sql combines the procedural features of programming languages with sql. The programming languages combination improves and enhances the capabilities of sql. A pl/sql engine is used for processing pl/sql statements. The code of Pl/ sql is stored on the database o... https://www.expertsmind.com/programming-solutions/PL-SQL-programming-projects-assignment-help.aspx