企业工资福利社会保障系统论文(论文)大学 大学毕业设计

大连交通大学信息工程学院

毕业设计(论文)任务书题目企业工资福利社会保障系统

毕业设计(论文)进度计划与考核表

指导教师签字：年月日注：“计划完成内容”由学生本人认真填写，其它由指导教师考核时填写。

大连交通大学信息工程学院

毕业设计(论文)外文翻译

学生姓名罗旭专业班级计算机08-2班指导教师王影魏琦职称高工讲师所在单位信息科学系计算机教研室

教研室主任宋丽芳

完成日期 2012 年 4 月 13 日

MySQL

MySQL's original developer intent is to use the mSQL and their rapid low-level routines ( ISAM ) to connect to form. After some tests, the developers concluded: mSQL and there is no need for them so fast and flexible. This led to a use almost like mSQL API interface for their database of the new SQL interface, so, the API is designed to allow for use on the mSQL to write the third party code easier to transfer to MySQL.

The name MySQL is how come is not clear. Basic guide and a large number of libraries and tools with the prefix "my" has had more than 10 years, and no matter what,co-founder of MySQL AB Monty Widenius The daughter also named My. The two which one it was given the name MySQL remains a mystery, including developers, also do not know.

MySQL Dolphins Logo name is" sakila", which is composed of a MySQL AB founder from the users in the" dolphin named" contest suggested a name table as select. The winning name is made from Africa and Swaziland's open source software developer Ambrose Twebaze. According to Ambrose, Sakila from a SiSwati Swaziland dialect, but also in the Ambrose 's home town of Uganda, near Tanzania's Arusha is one of the town's name.

And other large databases such as Oracle, DB2, SQL Server compared to MySQL, has its own disadvantages, such as small size, limited functionality ( MySQL Cluster function and efficiency are relatively poor ), but it did not reduce its popularity. For the average individual users and small and medium enterprises, the functionality provided by MySQL is more than sufficient, and because MySQL is open source software, thus can greatly reduce the total cost of ownership.

LAMP:

The current Internet popular website architecture is LAMP ( Linux + Apache + MySQL + PHP / Perl / Python ) and LNMP ( Linux + Nginx + MySQL + php / Perl / Python ), which uses the Linux as the operating system, Apache and Nginx as the Web server, MySQL as the database, PHP / Perl / Python as a server-side script interpreter. As a result of the four software are free or open source software ( FLOSS ), so use this way without spending a dime ( except artificial cost ) to establish a stable, free website system.

MyISAMMysql default database, the most commonly used. Have a high insertion, search speed, but does not support transactions InnoDB transactional database preferred engine, support for ACID affairs, support row-level locking BDB from Berkeley DB, transactional database for another option, support for COMMIT and ROLLBACK and other transaction characteristics of Memory all of the data in memory storage engine, with a high insertion, update and query efficiency. But it will take and data is proportional to the amount of memory space. And its content in the Mysql restart lost when Merge will be a certain amount of MyISAM combined into a whole, in the large scale data storage is useful when