| Engine | The DBDOM Engine object. | Gatsby.DBDOM.3 |
| AttributeDefinition | The definition of an Attribute. | |
| Challenge | A request for credentials. | |
| DataSources | A Gatsby Data Sources File. | |
| EnterpriseDatabase | A database that is accessed using ActiveX Data Objects. | |
| ObjectAttribute | An attribute that stores binary file objects. | |
| Procedure | A node that represents a stored procedure or action query. | |
| Query | A node that represents a view or select-only query. | |
| Relation | A node that represents a relationship between two nodes. | |
| Row | A node that represents a row of a view node. | |
| Schema | The definition of the attributes for a node. | |
| StandardDatabase | A Microsoft Access database. | |
| Table | A node that represents a table. | |