An educational link, University of Maryland that gives a high level overview of Regression Test Selection (RTS) techniques and has some further links on RTS.

From MSDN, a good definition of Software Regression Testing as well as some tips on building a suite, or library, of regression test cases. This is quite brief but to the point in terms of a high level perspective.

Regression Test Selection (RTS), from the University of Maryland, is presented in this paper in a readable way, i.e. not too academic. The RTS techniques mentioned include dataflow techniques, safe techniques, random techniques and test all techniques. There is also some set theory explaining the more formal definitions to regression.

From Agile Data (org) comes this self contained article on how to regression test a relational database. Mentions database trigger, rules, procedures as well as some interesting database testing tools. This list of tools is listed in the software testing directory database testing tools category but this particular article has a wider context of when to use certain tools.

An approach to regression testing data processing systems.

This article seeks to describe an approach to software regression testing that can be used in the typical commercial application setting. The strategy presented here uses a canned data approach as well as a simple regression test selection (RTS)

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