The relational database SQL Server 2012 is used as the database server of the system. Because SQL Server 2012 is a database that is easy to use and easy to manage, and has good integration with the development platform. Combining SQL Server 2012 with other software can easily complete a variety of storage security, functional and rapid deployment applications. And it can be redistributed under a certain protocol, as a basic database server and client database. Especially the database server and web database server are often used to store the data of local clients, which reduces the dependence on the network when the application accesses the data and makes the application more simple and easy to use.