Playing with cardinality and selectivity on predicates is not a common trick, though Joe Geller, David Simpson and Tony Andrews demystify it so that you can start playing with its intricacies and give a boost to the Optimizer.
Automated application testing for web services with a Db2 repository is not an easy task, and it invites for creative solution. On this post, David Morris shows how this can be accomplished with the aid of tools like Jenkins and H2 as a means of providing a test scenario that mirrors a Db2 database.
Why have agile development and DevOps techniques been adopted for software development over long-standing techniques like the waterfall approach? It all comes down to improved collaboration resulting in faster development and therefore a quicker return on investment.