The Relational Population Service Wizard, documented in Chapter 15, "
A single JADE schema can have more than one mapping.
The wizard enables you to select the classes and many-to-many relationships to include and the tables to which they are mapped. Each RPS node uses a specified RPS mapping to populate one RDBMS database. As all mapping metadata becomes part of the system specification in the JADE database, you can extract, load, and version it.
The following table shows the entity mapping concepts.
| JADE Concept or Entity | SQL Entity | Relational Concept |
|---|---|---|
| Class | Table | Relation |
| Instance | Row | Tuple |
| Object identifier (OID) | OID primary key column | OID primary key attribute |
| Attribute | Column | Attribute |
| Method | Column | Attribute |
| Reference | OID column | OID attribute |