More about For each command

We study in detail everything relative to a simple For each: base transaction and base table, indices and their relation with DB queries (optimization), and how to condition orders and filters, as well as how to program actions when the For each does not retrieve records.  

Introduction of the Procedure object with one of its multiple uses: implementing PDF listings displayed on the browser. We study two of the basic commands for that: print and For each, which enables access to an entity’s data.