dizhenjilu

完全用PHP来完成的办公自动化系统，主要是完成对数据库的操作，具有一个办公系统的基本功能。(Entirely in PHP to complete the office automation systems, mainly to complete the database operation, has a basic function of office systems.)

基于dao技术的vc++数据库编程实例，适用于初学者。(An example of vc++ database programming based on Dao Technology)

说明：  首先要在登陆系统时有身份验证功能，其次能对有关学生的各类信息的数据进行添加、修改和删除，能对学生成绩的数据进行添加，修改，删除，能对学生信息进行按学号，姓名进行查询，能对学生成绩按照课程号和姓名进行查询；系统管理员除可实现普通用户的操作外还可以添加，修改，删除用户信息，并能对密码进行修改。(We must first login authentication, and second on the data of all kinds of information about students to add, modify and delete student achievement data to add, modify, delete, according to school student information, name queries on student achievement in accordance with the course number and name of the query In addition to the ordinary user of the operation, the system administrator can also add, modify, delete user information, and can modify the password. )

orcl数据库sql语句跟踪工具，可以选择要跟踪的exe进行跟踪(Orcl database SQL tracking tool)

说明：  访问局域网内不同服务器里的数据库文件。(Accessing databases on different servers.)

VC++实践与提高数据库开发与工程应用篇第五章代码(VC++ database development and enhancement of practice and engineering application of chapter V code chapter)

说明：  ieee数据库中关于h264方面的全文学术文献。(ieee database h264 area on the full text of scholarly literature.)

数据库系统概念全书第六版答案（覆盖全）。(The answer to the sixth edition of database system is the answer.)

说明：  每组不超过4人，每人从TPC-H中选择至少三个查询进行执行，并进行性能调整。同组人员所选择的查询不能相同。各查询均必须包含：两个以上的表连接操作，其包含至少一个聚集函数。 每位同学的该作业均放在一个命名如“姓名-学号-专业-作业1”的目录中 用尽能想到的所有技术方法，使得选定的查询的某些性能指标尽可能的差 用尽能想到的所有技术方法，使得选定的查询的某些性能指标尽可能的好(Each group has no more than 4 people. Each person selects at least three queries from TPC-H to perform and performs performance adjustment. The queries selected by the same group can not be the same. Each query must contain more than two table join operations, which contain at least one aggregation function. Each student's homework is placed in a directory named "name student number professional operation 1". Using all the technical methods that can be thought of, make certain performance indicators of selected queries as poor as possible. Use all the technical methods that you can think of, and make certain performance indicators of selected queries as good as possible.)

实现三相四桥臂永磁同步电机矢量控制,此方法有很多优点，与传统的三桥臂SVPWM相比，波形有明显改善 谐波减少(Three phase and four leg PMSM controller)