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.

PL/SQL stands for Procedural Language/Structured Query Language. It is a powerful programming language that extends SQL (Structured Query Language) by adding procedural constructs. PL/SQL is used for writing stored procedures, functions, triggers, and other database-oriented programming constructs.

In summary, the correct answer is: PL/SQL is a procedural language extension for SQL used in Oracle Database, allowing developers to write procedural code in addition to standard SQL statements.