Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!cimshop!davidm From: cimshop!davidm@uunet.UU.NET (David S. Masterson) Newsgroups: comp.databases Subject: Re: Looking for ERA databases Message-ID: Date: 21 Mar 91 21:53:49 GMT References: <4821@berry7.UUCP> Sender: davidm@cimshop.UUCP Distribution: comp Organization: Consilium Inc., Mountain View, California Lines: 22 In-reply-to: saxena@motcid.UUCP's message of 12 Mar 91 21:23:14 GMT >>>>> On 12 Mar 91 21:23:14 GMT, saxena@motcid.UUCP (Garurank P. Saxena) said: Garurank> We are developing CASE tools which have complex relationships Garurank> between the entities and attributes on relationships. Garurank> We are looking for a database which supports the Entity-Relationship Garurank> (ERA ) model. Other requirements from the database would be Garurank> support for large volumes of data, transaction support, schema Garurank> evolution etc. Garurank> Are there commercial or prototype ER databases available? Isn't ER just a modeling for relational databases? Therefore, don't all relational databases support the ER(A) model by definition? BTW, what do you mean by "schema evolution"? -- ==================================================================== David Masterson Consilium, Inc. (415) 691-6311 640 Clyde Ct. uunet!cimshop!davidm Mtn. View, CA 94043 ==================================================================== "If someone thinks they know what I said, then I didn't say it!"