These are useful database interface builder tool, that can do your big part of work in a minute.
Check how to create a CategorySet and Configuration overview.
Load a CategorySet in admin panel to process data.
Execute SQL condition and fetch/update data from a CategorySet.
How to prepare an InformationSet to process data.
How to create a base part and configure it.
InformationSet field part define all field settings.
Sample codes of all type of field.
How to retrieve data from InformationSet.