数据库的工程界面

ENGINEERING INTERFACES OFDATABASES

系统地论述了数据库的工程界面、数据库管理系统、程序设计语言三者之间的层次关系。以ＳＴＥＰ标准的ＳＤＡＩ（ＳｔａｎｄａｒｄＤａｔａＡｃｃｅｓｓｌｎｔｅｒｆａｅｅ）作为数据库工程界面的具体例子，详细地论述了它向ＯＤＢＭＳ及ＲＤＢＭＳ的映射。对于向ＲＤＢＭＳ的映射，提出了“知子女联系”向“知子女联系”的映射策略，为简化映射算法、提高系统效率提供了一种选择。

There exists a hierarchical relationship among engineering interfaces, database man-agement systems and programming languages.M apping from SDAI of STEP, as an example of engineering interfaces of databases,to OD B M S or RDBM S is described,A mapping strategy known as “ways to children”to“ways to children”is presented.This strategy provides an option for simplification of the mapping algorithm and improvement of system performanee.