实验一

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.)

mysql-connector 5.1.32版本。。。。。。。(mysql-connector-java-5.1.32.jar)

用于程序人员存放自己的各种代码的工具 1支持数据库备份和导入 2支持程序升级 3资料修改维护方便(For program staff kept their own tools for a variety of code to support one database backup and import 2 support escalation procedures to facilitate the maintenance of 3 data modification)

模拟实现锁管理器(Simulation lock manager)

zookeeper的web管理系统,阿里员工创作(zookeeper web management system)

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.)

者使用vc++开发数据库的方法教程，含有vc++源码，参照文本学习可以比较清楚的理解方法，且提供了代码，可以用作例子，唯一不足在于代码是写在word文档中的，需要读者自己复制到vc++中使用(Use vc++ Development tutorial database, which contains vc++ Source, in the light of the text be in a better position to learn the understanding of methods, and provides the code, can be used as examples, the only shortage is that the code is written in the word document The need to copy itself to the reader vc++ use)

满汉楼管理系统（包括数据库，源代码）

用Delphi编写的户籍管理系统(prepared with the names of Delphi Management System)

VB+proteus+keil c 文件是电压检测系统 (VB+ proteus+ keil c are voltage detection system )