Using a relational database as an index to a distributed object database in engineering design systems
Samaras, George S.
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A pragmatic architecture for engineering design systems is described which divides the databases of those systems into a relational database and an object oriented database. The former is used to find objects in the object database and the latter is used to support the concurrent editing of designs by multiple users and processes on networks of workstations. The two part architecture is described together with classifications for the types of data that can be extracted from the object database and put into the relational database. Formulae that can be used to quantify the size of the relational database are given. (from authors' abstract)