C.J.Date, one of the creators of the relational database model, and a team lead on the original DB2, created this 900 word dictionary of relational database terms as a handy reference. The reason for the book is that over half the terms are common English, like "data definition, join, attribute, predicate, index, cube, key, DDS, table..." and when they are defined, even worse, the definitions are imprecise. It is a chore to find their true relational...