The Test Workbench organizes and manages R/3 System tests. The following graphic illustrates the components of the Test Workbench:
A Test catalog is a set of test cases plus additional information in a hypertext structure. The structure is based on the Business Navigator component or process view.
A Test plan is a view of a test catalog. It contains all test cases which are needed at a particular time for a particular purpose.
A Test package is a person and period-oriented view of a test plan. It contains all tests which a tester is to perform in a specified period.
A Test case is a testable part of the SAP System. It is often a business process or process chain.