On 01/10/2012 12:05 PM, Roy Smith wrote:
Somewhat more seriously, let's say you wanted to do test queries against
a database with 100 million records in it.  You could rebuild the
database from scratch for each test, but doing so might take hours per
test.  Sometimes, real life is just*so*  inconvenient.

All serious database has rollback feature when they're available to quickly revert database state in the setUp/cleanUp phase.

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