| ColumnRef | One end of a relation: a table and the columns of it that take part. |
| FixturePlan public API | The parsed form of a fixture plan: which tables take part, and how their
columns line up. |
| PlanParser | Reads the relation syntax of DBML into a plan. |
| PlanPrinter | Writes a plan back out in the syntax PlanParser reads. |
| PlanStructureException | Fixture relations that cannot define a finite generation order. |
| PlanSyntaxException | Invalid fixture plan syntax and relation endpoints. |
| Relation | One relation as written, with the roles the operator implies. |
| RelationChoice public API | Selects a set of relations for each row using one discriminator column. |