Data Projection
The attributes listed in the following table implement the projection of data from one table or multiple tables into a single data access class (DAC).
| Attribute | Description |
|---|---|
| PXProjection | Binds the DAC to a random data set. The attribute thus defines a named view, but is implemented by the server side rather than by the database. |
| PXExtraKey | Indicates that the field implements a relationship between two tables. The use of this attribute enables the update of the referenced table when the projection is updated. |