Odepsi is an experimental object-oriented data base management system. Developed as an extension to smalltalk-80 (trademark), odepsiis currently designed for the management of design and constructionproject data. Odepsi represents and manages data items on the basisof the object-oriented paradigm; all data items are in objects, andeach object has a set of properties and related procedures. The current version of the system emphasizes automatic constraint enforcement and semantic modeling. Odepsi provides facilities for defining and maintaining constraints on property values, object types, and object relationships. Semantics, which imply the meaning of the real-world subject being modeled, are represented through the use of object properties and interobject relationships. Major system components ofthe current version include a data definition language and a data manipulation language. Odepsi is an acronym for object-oriented data base management system for design and project planning and control system integration. This paper appears in transportation research record no. 1282, Transportation construction 1990.
Abstract