PostgreSQL → SQL Relation

File in IO/PostgreSQL	Includes file in IO/SQL
vtkPostgreSQLDatabase.h	vtkSQLDatabase.h
vtkPostgreSQLQuery.h	vtkSQLQuery.h
vtkPostgreSQLToTableReader.h	vtkDatabaseToTableReader.h
vtkTableToPostgreSQLWriter.h	vtkTableToDatabaseWriter.h