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说明：  mysql入门教材，包括pdf和操作的sql语句，适合新手入门(MySQL introductory materials, including PDF and operation of SQL statements, suitable for beginners)

说明：  详细的ORACLE数据库语句说明，有每一个语句的实例引用(Detailed ORACLE database statements, with instance references for each statement)

Oracle Corporation acquired GoldenGate in 2009 as part of future strategy to implement advanced replication technologies within the product suite of data warehousing and real-time transaction management. Before the advent of Oracle GoldenGate technology, data replication was performed using Oracle Streams and third-party replication solutions such as Quest SharePlex. This chapter discusses various types of database replication methods along with the techniques used by each method, to illustrate how Oracle GoldenGate came to be the logical conclusion for the current and future real-time- based data-transaction replication technology with Oracle database systems.

说明：  通过配置，实现mysql实时数据备份，文中详细阐述了整个细节以及注意事项(Through configuration, MySQL real-time data backup is realized. The whole details and matters needing attention are elaborated in detail.)

oracle 最新的api文档，惊喜不断哦。(oracle latest api documentation)

Archivo de conexion a BD mysqli

数据库更新源代码(database update source code!)

《数据库原理与应用》的答案与部分上机练习源代码（自编） (Of " Database Principle, and application of" answer with the part of the on the machine exercises the the source code (composing))

Es un sistema de venta hecho en java y con mysql que se puede registrar productos borrar producto dar de alta empleados, y hace un regsitro en la base de datos en la cual puede almacenar la informacion de la tienda.

会员管理系统是运用PHP，Mysql，Html技术实现对会员信息的管理，其中多次运用正则表达式对数据进行验证。此系统分为连个角色，管理员和普通用户