@inproceedings{bruno2006generating, author = {Bruno, Nicolas and Chaudhuri, Surajit and Thomas, Dilys}, title = {Generating Queries with Cardinality Constraints for DBMS Testing}, booktitle = {Transactions on Knowledge and Data Engineering}, year = {2006}, month = {January}, abstract = {Good testing coverage of novel database techniques, such as multidimensional histograms or changes in the execution engine, is a complex problem. In this work, we argue that this task requires generating query instances, not randomly, but based on a given set of constraints. Specifically, obtaining query instances that satisfy cardinality constraints on their sub-expressions is an important challenge. We show that this problem is inherently hard, and develop heuristics that effectively find approximate solutions.}, publisher = {IEEE Computer Society}, url = {http://approjects.co.za/?big=en-us/research/publication/generating-queries-with-cardinality-constraints-for-dbms-testing/}, }