PL/SQL (Procedural Language/Structured Query Language)

PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's proprietary procedural extension to the SQL database language. Some other SQL database management systems offer similar extensions to the SQL language. PL/SQL's syntax strongly resembles that of Ada, and just like Ada compilers of the 80-s the PL/SQL runtime system uses Diana (intermediate language) as intermediate representation.

The key strength of PL/SQL is its tight integration with the Oracle database.

PL/SQL is one of three languages embedded in the Oracle Database, the other two being SQL and Java.