This video provides an introduction to use case modeling using Visual Studio 2010.
This article discusses the different types and uses of data models, what they are good for, what the differences are between them. The author then analyzes the needs of an integration architecture and the special requirements it puts on a data model.
This web page groups information about what is a UML Use Case Diagram (UCD) and when you should use it.
This article presents the different types of relationship that could exist between classes in a UML class diagram, what is their notation and what they actually mean.
This video show how to draw UML Activity and Use Case Diagrams with Oryx. Oryx is an open soruce web-based editor for modeling business processes in various modeling languages like BPMN or EPC.
Roberto V. Zicari of www.odbms.org asked a few questions to Dr. Michael Blaha about using UML for database conceptual modeling.