tailieunhanh - Database Modeling & Design Fourth Edition- P44

Database Modeling & Design Fourth Edition- P44: Database technology has evolved rapidly in the three decades since the rise and eventual dominance of relational database systems. While many specialized database systems (object-oriented, spatial, multimedia, etc.) have found substantial user communities in the science and engineering fields, relational systems remain the dominant database technology for business enterprises. | 202 CHAPTER 9 CASE Tools for Logical Database Design Figure IBM s Rational MultiSite software for massively distributed software management courtesy IBM Rational Division Quest development and source code control products to allow local replicas of Rational ClearCase and Rational ClearQuest repositories. Rational MultiSite also handles the automatic synchronization of the replicas. This is particularly useful for companies with distributed development who wish to have fast response times for their developers via access to local information and such replication is often an absolute requirement for geographically distributed teams. Application Life Cycle Tooling Integration The best CASE tools for database design are integrated with a complete suite of application development tools that cover the software development life cycle. This allows the entire development team to work from an integrated tool platform rather than the data modelers being off in their own world. Only the largest vendors offer this and in fact true tooling integration across the development life cycle is somewhat rare. This solution is in a very real way the philosopher s stone of development infrastructure vendors. All the vendors who produce software development platforms have been working to develop this breadth during the past two decades. The challenge is elusive simply because it is hard to do well. The three companies we are discussing here all have Application Life Cycle Tooling Integration 203 Figure Sybase PowerDesigner plug-in to Sybase PowerBuilder picture from http docs 1 Berndt Hambock broad offerings and provide some degree of integration with their database design CASE technology. For Computer Associates the AllFusion brand is a family of development life cycles tools. It is intended to cover designing building deploying and managing eBusiness applications. Sybase also has a broad product suite and their strength is in collaborative technology. From