What is PL/SQL? › Category: Questions › What is PL/SQL? 0 Vote Up Vote Down Editor">Editor Staff asked 2 years ago What is PL/SQL? 1 Answers 0 Vote Up Vote Down Editor">Editor Staff answered 2 years ago PL/SQL stands for procedural language extension to SQL. It supports procedural features of programming language and SQL both. It was developed by Oracle Corporation in early of 90’s to enhance the capabilities of SQL.