APEX SQL refers to the SQL and PL/SQL code used inside Oracle APEX to manage data, business logic, validations, and application workflows. Since APEX runs directly inside the Oracle Database, SQL is the primary language for interacting with data, while PL/SQL powers procedural logic.

In APEX you use:

• SQL for queries, reports, CRUD operations, dashboards

• PL/SQL for server-side logic, validations, automation, APIs

APEX allows developers to build enterprise applications quickly by leveraging the full power of Oracle SQL without external services or middleware.