DATA ORGANIZED AS A 2D TABLE Keyword for finding a unique record Field name Students ID Name Gender Member Major Birth of Scholarship ofACM date 990001 aa M No Physics 82-01-21 ￥160.00 990002 bb F Yes Physics 82-09-21 ￥200.00 990101 cc M No Math. 81-04-18 ￥180.00 Record 990102 dd F No Math. 81-12-02 ￥280.00 990103 ee M No Physics 80-08-06 ￥240.00 990201 ff F Yes Computer 82-11-14 ￥200.00 990202 gg Yes Computer 83-02-21 ￥160.00 12 Relation (2D table) value:{male, female) Value(Fieldname)DATA ORGANIZED AS A 2D TABLE 12 Students Field name Value(Fieldname) ee M ID Name Gender Member of ACM Major Birth of date Scholarship 990001 aa M No Physics 82-01-21 ￥160.00 990002 bb F Yes 82-09-21 ￥200.00 990101 cc M No 81-04-18 ￥180.00 990102 dd F No 81-12-02 ￥280.00 No 80-08-06 ￥240.00 990201 ff F Yes Computer 82-11-14 ￥200.00 990202 gg F Yes 83-02-21 ￥160.00 990103 Record Keyword for finding a unique record Relation（2D table） value：{male，female} Physics Math. Math. Physics Computer