About Grid and GridColumn components
Grid components allow you to display and maintain data in a tabular format. The data in a grid is taken from an IDO collection, which must be bound to the grid.
The grid component itself is a containerfor one or more grid columns. Each column displays data associated with a single property from the IDO collection.
A grid can be bound to a primary collection, a secondary collection, or a subcollection. A collection bound to a grid is displayed and maintained in the grid.