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关系数据库，是建立在关系模型基础上的数据库，借助于集合代数等数学概念和方法来处理数据库中的数据。现实世界中的各种实体以及实体之间的各种联系均用关系模型来表示。标准数据查询语言SQL就是一种基于关系数据库的语言，这种语言执行对关系数据库中数据的检索和操作。 关系模型由关系数据结构、关系操作集合、关系完整性约束三部分组成。

Relational database relational model is built on the basis of the database , by means of a collection of algebra and other mathematical concepts and methods to handle data in the database . Various entities in the real world as well as the linkages between entities are represented by the relational model . Standard data query language SQL is a relational database -based language that perform relational database data retrieval and manipulation. Relational data structures from the relational model , relational set of operations , relational integrity constraints of three parts.

MySQL是一个开放源代码的关系型数据库管理系统，开发者为瑞典MySQL AB公司。目前MySQL被广泛地应用在Internet上的中小型网站中。由于其体积小、速度快、总体拥有成本低，尤其是开放源码这一特点，许多中小型网站为了降低网站总体拥有成本而选择了MySQL作为网站数据库。

MySQL is an open-source relational database management system , developed by the Swedish company MySQL AB . Currently MySQL is widely used in small and medium sites on the Internet . Because of its small size , speed and low total cost of ownership , especially in open source this feature , many small and medium websites in order to reduce the total cost of ownership while site chose MySQL as the website database .
 ( 1 ) using the C and C + + to write and use a variety of compilers are tested to ensure the portability of the source code .
( 2 ) support for AIX, BSDi, FreeBSD, HP-UX, Linux, Mac OS, Novell NetWare, NetBSD, OpenBSD, OS / 2 Wrap, Solaris, Windows and other operating systems .
( 3 ) for a variety of programming languages provide API. These programming languages including C, C + +, C #, VB.NET, Delphi, Eiffel, Java, Perl, PHP, Python, Ruby and Tcl .
( 4 ) Support multi-threading, make full use of CPU resources , support multiple users .
( 5 ) both to a single application at the client server network application environment, but also can be used as a repository is embedded into other software.
    ( 6 ) provide multi- language support, common coding such as the Chinese GB 2312, BIG5, Japanese Shift JIS and so can be used as a data table name and data column name.
 ( 7 ) SQL query optimization algorithms effectively improve the query speed. Provide for management, inspection and optimize database operations management tools that can handle millions of records have a large database .

     Requirements analysis phase is the development of enterprise asset management system for the most important stage . The first is to understand the needs analysis and clarification of the needs of users , and then define the strictly defined enterprise asset management system requirements specification .

The system involves three types of users : ordinary users , system administrators and anonymous users. Among them, the anonymous user can log into the system home page at any time to view the device 's basic information assets , primarily for the general staff to provide services. Ordinary users refers to the equipment management department heads , they can enter the system background , but only viewing. System administrators are the primary user of the system , responsible for data entry, modify , delete, and common user management.

First, create a total of hp2011 MySQL database, and then cr本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。