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CA ERwin Data Modeler
CA ERwin Data Modeler (ERwin) is a software tool for data modeling (data requirements analysis, database design etc.) of custom developed information systems, including databases of transactional systems and data marts. ERwin's data modeling engine is based upon the IDEF1X method, although it now supports diagrams displayed with information engineering notation as well. Logic Works stylised "ERwin" from an abbreviation of "Entity Relationships" and Microsoft's "Windows".
==History==
ERwin was created by Logic Works. It was acquired in 1998 by Platinum Technology, which was later acquired in May 1999 by Computer Associates, who added it to their AllFusion suite under the name ''AllFusion ERwin Data Modeler''. The tool was later renamed to ''CA ERwin Data Modeler''.
In 2014 Embarcadero Technologies sought to acquire the product from CA, Inc..〔Joab Jackson. ("Embarcadero moves into data modeling with CA ERwin buy". ) ''IDG News Service, 14 March 2014.〕 This acquisition was blocked by the Department of Justice over anti-competitive concerns.〔http://www.justice.gov/opa/pr/embarcadero-technologies-and-ca-inc-terminate-proposed-transfer-ca-incs-erwin-data-modeler〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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