sql server与oracle、db2的比较（Comparison of SQL, server and Oracle and DB2）.doc

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sql server与oracle、db2的比较（Comparison of SQL, server and Oracle and DB2）.doc

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sql server与oracle、db2的比较（Comparison of SQL, server and Oracle and DB2）

sql server与oracle、db2的比较（Comparison of SQL, server and Oracle and DB2） Analysis of the comparison of SQL, Server and Oracle and DB2 This paper analyzes the differences between the three databases, SQL, Server and Oracle, DB2 in the use and performance, for reference. Openness SQL Server Can only run on Windows, without the slightest openness, the stability of the operating system is very important to the database. Windows9X products are more emphasis on desktop applications, NT Server is suitable only for small and medium enterprises. Moreover, the reliability, security and scalability of the Windows platform are very limited. Its not as tested as Unix, especially when dealing with big data critical businesses. Oracle It can run on all major platforms (including Windows). Fully support all industrial standards. Adopt a fully open strategy. Allows customers to choose the most appropriate solution. Full support for developers. DB2 It can run on all major platforms (including Windows). Most suitable for mass data. DB2 is the most widely used enterprise class, and in almost 85% of the worlds largest enterprises, more than 500 use DB2 database servers, while domestic accounts for about 5% in 97 years. Scalability, parallelism SQL Server Concurrent implementation and coexistence models are not mature. Its hard to deal with the increasing number of users and data volumes. Limited scalability. Oracle Parallel servers extend the ability of Window NT by providing a set of nodes that share the work in the same cluster, providing a solution for clusters with high availability and high scalability. If WindowsNT does not meet the need, The user can move the database to UNIX. DB2 DB2 has good parallelism. DB2 extends database management to a parallel, multi node environment. A database partition is part of a database that contains its own data, indexes, configuration files, and transaction logs. A database partition is sometimes referred to as a node or database node. Security SQL