Aus meinem Fundus hier ein paar (recht alte) Datenbank-Witze:

Q: Why couldn't the index become a tightrope-walker?
A: It was unbalanced

Q: Was the cube straight or gay?
A; Neither, it was BI.

Q: What on earth was the query trying to do when it set fire to its wallet?
A: It must have been trying to warm its cache.

Q: How did the police catch the serial-killer query?
A: They used a Profiler

Q: What's a dentist's favourite MDX function?
A: Extract

Q: How did the BI developer send his backed-up database to a colleague on the other side of London?
A: In a .cab file

Die Quelle notierte ich damals leider nicht.