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Test data can be managed by RQM. Test Data can be imported
The format for importing into RQM is fixed. An example is provided here.
Same file as a names.csv.
Manage test data more effectively with Rational Quality Manager 4.0.1 - very good article!
Figure: Selecting Test Data when creating Test Execution Record.
Within the various Test Tools (RTW) you can store the Test Data.
How to use test data in Test and Virtual Services
A full blown Test Data Management (extract, translate, load) can be provided by
IBM InfoSphere Optim.