Two common problems are the lack of a versioning scheme and reliance on the object data model 兩個(gè)常見的問(wèn)題是缺少版本控制方案和依賴于物件資料模型。
Research on oriented object data model modeling method and application in large scale data platform 面向?qū)ο髷?shù)據(jù)模型建模方法研究及在大規(guī)模數(shù)據(jù)平臺(tái)中的應(yīng)用
As a result , spatio - temporal object - oriented data model and moving object data model behave more strongly in the expressions of the spatio - temporal objects 結(jié)果表明,面向?qū)ο髷?shù)據(jù)模型和移動(dòng)對(duì)象數(shù)據(jù)模型在時(shí)空對(duì)象的表達(dá)上體現(xiàn)了較強(qiáng)的能力。
The main works are as follows : la oodm ( oriented object data model ) for visualization in city 3d scene and information " s query is presented in this paper , according to the characteristic of city space object 論文所作的工作主要有: 1在對(duì)已有的三維空間數(shù)據(jù)模型研究成果進(jìn)行討論的基礎(chǔ)上,根據(jù)城市空間地物的分類特點(diǎn),提出了一種適用于城市三維可視化和信息查詢系統(tǒng)的面向?qū)ο笕S數(shù)據(jù)結(jié)構(gòu)。
Hence , it is imperative to improve and expand it . this paper will research modeling method of workflow system , designing and storing method of object data model , transaction execution , and version control of resource combined with characteristics of engineering design 本文結(jié)合工程設(shè)計(jì)項(xiàng)目管理的應(yīng)用特點(diǎn)從工作流系統(tǒng)的建模方法、對(duì)象數(shù)據(jù)模型的設(shè)計(jì)及存儲(chǔ)方案、事務(wù)執(zhí)行機(jī)制以及資源版本控制等方面進(jìn)行技術(shù)研究。
Nowadays , development and exploitation of cad become the promising discipline in computer integration manufacture system environment along with rapid development of computer aided design . the principle of product design & manufacture procedure is the collection , transfer , processing and transaction procedure of information , which is externalized by technology integration whose feature is information integration , and traditional way of data organization can not describe and express product design information . in this thesis , we presents semantic - object data model whose definition combines semantic information , such as knowledge and rules , with object - oriented technology according to the design feature of cad system , define semantic - object engineer template combine with template knowledge express way 隨著計(jì)算機(jī)輔助設(shè)計(jì)( cad )的迅速發(fā)展,集成化cad系統(tǒng)的研制與開發(fā)成為當(dāng)今計(jì)算機(jī)集成制造系統(tǒng)( cims )環(huán)境下cad的發(fā)展方向,因而產(chǎn)品的整個(gè)設(shè)計(jì)制造過(guò)程的實(shí)質(zhì)即是對(duì)信息的采集、傳遞、加工和處理過(guò)程,其本質(zhì)體現(xiàn)在以信息集成為特征的技術(shù)集成方面,而工程設(shè)計(jì)中傳統(tǒng)的數(shù)據(jù)組織方式已不能有效地描述和表達(dá)產(chǎn)品設(shè)計(jì)信息。