1 ) Write a Query To Delete The Repeted Rows from emp table; SQL>Delete from emp where rowid not in(select min(rowid)from emp group by ename) 2) TO DISPLAY 5 TO 7 ROWS FROM A TABLE SQL>select ename from emp where rowid in(select rowid from emp where rownum<=7 minus select rowid from empi where rownum<5) 3) DISPLAY TOP N ROWS FROM TABLE? SQL>SELECT * FROM (SELECT * FROM EMP ORDER BY ENAME DESC) WHERE ROWNUM <10; 4) DISPLAY TOP 3 SALARIES FROM EMP; SQL>SELECT SAL FROM ( SELECT...