| LJCDataColumn | Represents a Data Column. |
| LJCDataColumns | Represents a collection of LJCDataColumn objects. |
| LJCJoin | Represents a Data Join. |
| LJCJoins | Represents a collection of LJCJoin objects. |
| LJCJoinOn | Represents a JoinOn clause. |
| LJCJoinOns | Represents a collection of LJCJoinOn objects. |