Turtle DB
A mini DDBMS
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Public Member Functions | |
Schema | getSchema () |
void | addOperand (Relation r) |
int | tupleCount () |
Protected Member Functions | |
NAryRelation () | |
Protected Attributes | |
List< Relation > | m_relations |
ca.uqac.dim.ddb.NAryRelation.NAryRelation | ( | ) | [protected] |
Schema ca.uqac.dim.ddb.NAryRelation.getSchema | ( | ) | [virtual] |
int ca.uqac.dim.ddb.NAryRelation.tupleCount | ( | ) | [virtual] |
Returns the number of actual tuples present in the query. This number is different from the cardinality of the query; it counts the number of tuples that are present in the leaves of the query tree.
Implements ca.uqac.dim.ddb.Relation.
List<Relation> ca.uqac.dim.ddb.NAryRelation.m_relations [protected] |