Oracle Help is an Oracle resource dedicated to supporting users and developers of the Oracle database & PL/SQL.

This website contains hundreds of examples, explanations, and sample code.

Oracle Database is an relational database management system produced and marketed by Oracle Corporation.
Commonly referred to as Oracle RDBMS or simply as Oracle.

PL/SQL stands for “Procedural Language/Structured Query Language”, and can be used in Oracle databases (since version 7).

PL/SQL is closely integrated into the SQL language, but it adds programming constructs that are not native to SQL.