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贵州大学研究生数据库实验报告
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.)
- 2018-07-07 22:23:26下载
- 积分：1
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dianyajiancexitong
VB+proteus+keil c 文件是电压检测系统
(VB+ proteus+ keil c are voltage detection system )
- 2009-04-06 23:31:57下载
- 积分：1
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morton
根据莫顿码计算行列号
根据行列号计算莫顿码(Morton code ,GIS rasterdata.)
- 2021-01-29 15:28:39下载
- 积分：1
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asptools
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)
- 2007-11-05 08:20:24下载
- 积分：1
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数据库专题课件
数据库ppt,主要是关于分布式数据库的内容，设计到mongodb(database PPT of ditributed databaseSystem with mongodb)
- 2018-04-01 20:32:01下载
- 积分：1
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AuthUtil
说明： 通过面向对象的对象-关系映射持久化技术，将一对多以及多对多的数据保存到数据库中并提供查询修改等功能。(Through Object-Oriented Object- Relational Mapping Persistence technology, one-to-many and many-to-many data is saved to the database and to provide features such as query modification.)
- 2008-10-08 15:53:09下载
- 积分：1
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数据库教程
我我大号是佛山ID酒叟覅偶的搜救富欧式的地搜佛寺丢分(jksdhkerhgoiprjkgjeoprjgp)
- 2020-06-16 13:00:01下载
- 积分：1
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character-identification
character recoginition by matlab
- 2016-10-17 00:02:03下载
- 积分：1
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UCI
是UCI数据库中的一些有代表性的数据集，用相关软件打开后即可使用(UCI database are some typical data sets, using the relevant software to open, ready for use)
- 2009-03-24 00:21:12下载
- 积分：1
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dd
说明： 药易通表结构（完整版）药易通表结构（完整版）(dui daji dou ou haochu)
- 2009-03-11 00:51:25下载
- 积分：1
