Research On Version Management For Engineering Database In Collaborative Environments

Technology trend of CAD/CAM is to establish integrated and distributed collaborative environments of working. The engineering database management system(EDBMS) is an effective way in sharing data in collaborative environments and receiving extensive researched in resent years. Version Management is becoming a critical node in EDBMS research because that engineering design's characteristics are repeatedly and option finally, which is not resolved completely so far as.This paper discusses the research on version management of engine CAD engineering databases in background of research of engine CAD collaborative environments. The paper discusses the research on collaborative design, engineering database theories and collaborative environments of engine CAD, introduces the backstage DBMS—ORACLE particularly. Version management mechanism of engine CAD engineering databases is given out through the analysis and research on the using version management mechanism and models, which using DAG models and parted database version blocks. After that, the paper designs and realizes a version management system base on recorders for multi-versions. The system provides functions such as version browse, version revise, version submission and so on, gives convenience and friendly interfaces to users, which make the version management simple and easy.