But each of the three products - Hora, ER Diagrammer und PL/SQL Debugger - is also designed to work with the other two, and shares a common design philosophy.

• 包括3个Oracle工具软件--Hora；ER图和PL/SQL调试器，帮助Oracle数据库服务器管理员来管理服务器，也可以给PL/SQL程序员用来进行数据库开发.