Whether youâre new to Oracle or an old hand whoâs yet to test the waters of APEX, Beginning Oracle Application Express 4 introduces the processes and best practices youâll need to become proficient with APEX. The book shows off the programming environment, the utilities and tools available, and then continues by walking through the process of building a working system from the ground up. While the book assumes a foundational knowledge of SQL and PL/SQL, all code used is documented and explained so that those new to the languages will not be lost.