IBooleanExpression

IDomainVariable

A domain variable in relational algebra

IRelationAttribute

A domain variable that's a simple column reference

IRelationComparison

A comparison operator in relational algebra

IRelationCondition

A boolean condition in relational algebra

IRelationVariable

A relation variable (RV) in relational algebra

ISQLDriver

Helper object for SQL generation

ISQLRenderable

Object that can render itself as SQL to an 'ISQLWriter

ISQLWriter

A smart stream used to create SQL statements