{"title":"A CODASYL CAD Data Base System","authors":"G. Zintl","doi":"10.1109/DAC.1981.1585414","DOIUrl":null,"url":null,"abstract":"If in CAD systems a CODASYL data base system is used, one has to avoid some well known disadvantages. To achieve this, we defined for CAD needs in application programs a special high level data manipulation language (HLDML). With this concept the application programs get independent from the data base structure and they are able to work with a \"many records at a time\"-view. Other provisions reduced some overhead caused by the used data base system.","PeriodicalId":201443,"journal":{"name":"18th Design Automation Conference","volume":"57 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1981-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"12","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"18th Design Automation Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/DAC.1981.1585414","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 12
Abstract
If in CAD systems a CODASYL data base system is used, one has to avoid some well known disadvantages. To achieve this, we defined for CAD needs in application programs a special high level data manipulation language (HLDML). With this concept the application programs get independent from the data base structure and they are able to work with a "many records at a time"-view. Other provisions reduced some overhead caused by the used data base system.