RE: (ROSE) database on class diagram

[Mathi, Ravi]

As an aside, If you were doing this in the context of J2EE applications and using Enterprise Java Beans (EJBs) to implement persistence in an enterprise application / multi-tier client-server application, ROSE can convert your data-model to an object model. Individual classes in the object model can then be converted to EJBs. Skeletal Java code may then be generated in Rose. In this case there is one-to-one correspondance between the data and Object models. It may not make much a good design if you try to have such a correspondance where persistance using a back-end database is NOT the design objective.   Ravi Mathi -----Original Message----- [Mathi, Ravi]   From: Walter Howard [mailto:[EMAIL PROTECTED]] Sent: Thursday, March 22, 2001 10:43 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: (ROSE) database on class diagram [Mathi, Ravi]   Yes you can model business data requirements using UML.  Data modeling is a requirements gathering and documenting process.  Its goal is to eliminate redundency in the database.  It is inherently different than building a class model for an application.  The application class model includes behavior as well as data when constructing the model.  So you can't just model the application, indicate which attributes are persistent, transform the class diagram to a data model, and expect a good database.  So to answer your question, yes you need to model the database and no it does not have to be in the same diagram (but it can help).  The appropriate stereotype is Entity.[Mathi, Ravi]   Walter >>> "Chris Condos" <[EMAIL PROTECTED]> 03/22/01 10:18AM >>> Folks, just a quick question: say, you have to produce a class diagram for a system that needs to access an external database. would you actually show the database on the class diagram (as a stereotype class maybe) or isn't that necessary? Chris --- Chris Condos, School Of Mathematical & Information Sciences, Computer Science Subject Group, Coventry University, Priory Street, CV1 5FB, Coventry, UK Tel: +44 - 24 - 76 88 8519 e-mail: [EMAIL PROTECTED] ************************************************************************ * Rose Forum is a public venue for ideas and discussions. * For technical support, visit http://www.rational.com/support * * Admin.Subscription Requests: [EMAIL PROTECTED] * Archive of messages: http://www.rational.com/products/rose/usergroups/rose_forum.jtmpl * Other Requests: [EMAIL PROTECTED] * * To unsubscribe from the list, please send email * * To: [EMAIL PROTECTED] * Subject:<BLANK> * Body: unsubscribe rose_forum * *************************************************************************