对于oracle的深层概念进行了讲解，包括数据库的高级维护，数据备份，数据恢复，数据库调优；另外对于基于sql的编程，基于c、java的外部编程进行了详细讲解，适合于致力于成为DBA的高级技术人员使用。-For the oracle was to explain the underlying concepts, including advanced database maintenance, data backup, data recovery, database tuning　other for sql-based programming, based on c, java programming in detail the external explanation, suitable to become a DBA senior technical personnel.