Records
Records and selections are primary tools that allow 4D developers to access and handle data from the 4D database. They are legacy concepts. New developments are encouraged to rely on the modern ORDA architecture. However, they are still fully functional and are widely used in existing 4D developments.
Current Selection
Overview
Named Selections
Named selections provide an easy way to manipulate several selections simultaneously. A named selection is an ordered list of records for a table in a process. This ordered list can be given a name and kept in memory. Named selections offer a simple means to preserve in memory the order of the selection and the current record of the selection.
Sets
Sets offer you a powerful, swift means for manipulating record selections. Besides the ability to create sets, relate them to the current selection, and store, load, and clear sets, 4D offers three standard set operations: