from this table:

33 GRTYP CREATED BY NNULL "CREATED BY" IS NOT NULL (null ) 34 GRTYP CREATED DATE NNULL "CREATED DATE" IS NOT NULL (null ) 35 GRTYP MODIFIED BY NNULL "MODIFIED BY" IS NOT NULL (null) 36 GRTYP MODIFIED DATE NNULL "MODIFIED DATE" IS NOT NULL (null) 37 GRTYP GRADE TYPE CODE LENGTH LENGTH ( grade_type_code ) =2 (null) 38 GRTW SECTION ID NNULL "SECTION ID" IS NOT NULL (null ) 39 GRTW GRADE TYPE CODE NNULL "GRADE TYPE CODE" IS NOT NULL (null ) 40 GRTW NUMBER PER SECTION NNULL "NUMBER PER SECTION" IS NOT NULL (null ) 41 GRTW PCT OF FINAL GRADE NNULL C "PERCENT OF FINAL GRADE" IS NOT NULL (null) 42 GRTW DROP LOWEST NNULL "DROP LOWEST" IS NOT NULL (null ) 43 GRTW CREATED BY NNULL C "CREATED BY" IS NOT NULL (null ) 44 GRTW CREATED DATE NNULL "CREATED DATE" IS NOT NULL (null ) 45 GRTW MODIFIED BY NNULL "MODIFIED BY" IS NOT NULL (null ) 46 GRTW MODIFIED_DATE_NNULL "MODIFIED DATE" IS NOT NULL (null ) 47 INST INSTRUCTOR_ID_NNULL "INSTRUCTOR ID" IS NOT NULL (null ) 48 INST CREATED BY NNULL "CREATED BY" IS NOT NULL (null ) 49 INST CREATED DATE NNULL "CREATED DATE" IS NOT NULL (null ) 50 INST MODFIED BY NNULL "MODIFIED BY" IS NOT NULL (null ) 51 INST MODIFIED DATE NNULL "MODIFIED DATE" IS NOT NULL (null) 52 SECT SECTION ID NNULL "SECTION ID" IS NOT NULL (null ) 53 SECT COURSE NO NNULL "COURSE NO" IS NOT NULL (null) 54 SECT SECTION NO NNULL "SECTION NO" IS NOT NULL (null ) 55 SECT INSTRUCTOR_ID NNULL "INSTRUCTOR ID" IS NOT NULL (null ) 56 SECT CREATED BY NNULL "CREATED BY" IS NOT NULL (null )