Design and cooperation management through: design steps and objetct characteristics

• Autores: María Aparecida Castro Livi, Cirano Iochpe
• Localización: Panel '92: actas, XVIII Conferencia Latinoamericana de Informática, 1992, págs. 284-291
• Idioma: español
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• Resumen

  • Conventional database management systems (DBMS) do not cope well with the requirement of cooperative work in the design environment (DE). They implement conventional, short transactions which run in isolation preventing designers from exchanging non-committed object updates. Cooperation models are being proposed which aim at supporting DE's dynamic properties (i. e. its processing model) especially with respect to both object-tranfer operations and the definition of application-oriented correctness criteria for the database (DB).

    This work gives an overview of the design management and cooperation model for CAD database systems being developed at the CPGCC-UFRGS and presents a mechanism which realizes it. The model supports object definition by means of application-oriented object characteristics (properties). Characteristics are integrated into objects through the execution of design steps. Design steps are related to one another forming partial orders which represent the design process. Relying on sets of object characteristics and partial orders of design steps, the DBMS's Design and Cooperation Manager (DCM) guarantees database correctness by controling the design process as well as object-transfer operations.