DT_I1 SMALLINT DT_I2 SMALLINT DT_I4 INTEGER DT_I8 BIGINT DT_UI1 SMALLINT DT_UI2 INTEGER DT_UI4 BIGINT DT_UI8 DECIMAL 20 DT_R4 REAL DT_R8 DOUBLE DT_CY DECIMAL 19 4 DT_BOOL SMALLINT DT_GUID CHAR 38 DT_BYTES BLOB DT_IMAGE BLOB DT_TEXT CLOB DT_NTEXT DBCLOB DT_STR VARCHAR DT_WSTR VARGRAPHIC DT_DECIMAL DECIMAL 28 DT_NUMERIC DECIMAL DT_DBTIMESTAMP TIMESTAMP DT_DBTIMESTAMP2 TIMESTAMP DT_DBTIMESTAMPOFFSET TIMESTAMP DT_DATE TIMESTAMP DT_DBDATE DATE DT_DBTIME TIMESTAMP DT_DBTIME2 TIME DT_FILETIME TIMESTAMP