Data dictionary PostgreSQL related data dictionary topics. SQL types mapping: PostgreSQLExtracting database schemas from PostgreSQLBOOLEAN data typeCHAR and VARCHAR data typesNumeric data typesDATE and DATETIME data typesINTERVAL data typeSERIAL and BIGSERIAL data typesROWID columnsTEXT and BYTE (LOB) typesSQL table definitionName resolution of SQL objects