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Consider the relations EMP(ENO,ENAME,AGE,BASIC_SALARY) WORK_IN(ENO,DNO) DEPT(DNO,DNAME,CITY) Express the following queries in SQL(i) Find names of employees who work in a deptt. in Delhi.(ii) Get the deptt. number in which more than one employee is working.(iii) Find name of employee who earns highest salary in ‘HR' department.
(i) select ENAME from EMP, WORK_IN, DEPT where EMP.ENo= WORK_IN.ENO and WORK_IN.DNO= DEPT.DNO and CITY= ‘Delhi'; (ii) select DNO from WORK_IN group by DNO having count(*) >1 (iii) select ENAME from EMP e where BASIC_SALARY >= (select max(BASIC_SALARY) from DEPT,WORK_IN where DNAME = ‘HR' and e.ENO = WORK_IN.ENO and WORK_IN. DNO= DEPT.DNO)
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