What is “Application Registry” in the Business Data Catalog object models?
The UserContext filter limits the instances returned by a method to the current user’s context. This filter tells the Business Data Catalog to append the current Microsoft Windows user’s domain name and user name to the method call. If a metadata author creates metadata that takes a user name as a user-controllable filter and returns sensitive personal data, a user may see another user’s data. To avoid this, use the UserContext filter to pass in the user name to the method call.