... table_constraint:&DFUDQJEX¤FWUQEDQJGOL£X9GX&XO£QKGL\WK£FKL£QKYL£FWD£REDQJ 1+ $19 , (1 EDRJPFDFF¤W 0 $19 +27 (1 1* $<6 ,1+ ',$&+,', (17 +2$,CREATE TABLE nhanvien(manv char ( 10 ) not null,hoten char( 30) not null,ngaysinh ... char ( 10 ) primary key, hoten char( 20) not null, ngaysinh datetime null, diachi char( 50) default 'khong biet', dienthoai char(6) check(dienthoai like ' [0- 9] [0- 9] [0- 9] [0- 9] [0- 9] [0- 9]'), ... ,colname16]])] 1 ¢XNKRDFKQKFXDP¤WEDQJFKODP¤WF¤WNKLRED£QNKQJFQWKL¢WSKDLFKQKGDQKVDFKFDFF¤WVGX£QJUDQJEX¤FPFF¤W7URQJWUQJK¤SNKRDFKQKODP¤WW£SK¤SWKDLF¤WWUOQED£QSKDLFKQKGDQKVDFKFDFF¤WVGX£QJUDQJEX¤FPFEDQJ9GXWD£REDQJ 1+ $19 , (1 YLNKRDFKQKOD 0 $19 CREATE TABLE nhanvien(manv char ( 10 ) primary key,hoten char( 30) not null,ngaysinh datetime null,diachi char( 50) null,dienthoai char(6)...