在工程设计中,人们已逐步认识到数据库的重要性。本文所介绍的两个工程设计实用型数据库是国外工程公司的成品,可直接用于国内的工程设计。由于一个偶然的机会,我们引进了这两个数据库,因为没有任何资料可以查阅,所以我们根据数据库的原理,自行剖析了数据库,这对于指导国内的工程设计有一定意义。 一、一般介绍 DT数据库和LD数据库都是美国某公司应用于工程设计的数据库。 DT数据库建于1987年,它主要是针对设计工程中的自动控制专业的需要而建立 In engineering design, people have come to realize the importance of databases. This article describes the two engineering design and practical database is the finished product of foreign engineering company, can be used directly for domestic engineering design. Due to a chance, we introduced these two databases, because there is no information to be able to check, so we analyze the database according to the principle of the database, which is of some significance to guide the domestic engineering design. First, the general introduction DT database and LD database are a company in the United States used in engineering design database. Built in 1987, the DT database is built primarily for the needs of automation professionals in design engineering