GetEntityType obtains a map from entity key to the types.

GetExplicitTypeProp obtains a map from type to list of predicate.

GetFuncDeps obtains the functional deps from schema mapping.

GetInArcInfo gets the table and columns corresponding to the node properties.

GetNodeRef obtains a list of node reference from query statements.

GetNodeType obtains a map from node alias to the types.

GetOutArcInfo gets the table and columns corresponding to the node properties.

GetProvColumn obtains the provenance column for each table.

GetQueryID obtains the id for query statement.

GetSubTypeMap gets subtype map.

MatchTriple takes list of queries and mappings and determines whether a query matches Triples table.

PruneMapping prunes foreign key entity mappings.

RewriteQuery rewrites typeOf query for entity that is a subType.