CA ERwin is a data modeler. The name stands for "Entity Relationship" and Microsoft "Windows". The tool was created by Logic Works. It allows you to also do requirements analysis. Of course it lets you do database design. ERwin will let you create a custom information system, a transactional database system, or a datamart. There are four main editions of the software:
- Community - free, subset of features, max 25 objects
- Navigator - read only
- Standard - an enterprise edition
- Workgroups - collaborative
- SQL Server
Once installed, I found the IDE to be very intuitive. It felt like using Microsoft's Visual Studio, where I feel at home. I started a logical modeling project. Generated a bunch of entities chock full of attributes. Save my file off with an "*.etwin" extension. Later I plan to create a physical model and deploy it to an Oracle database. Oh my.