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Problem 10: Explain and tell the results: select empno, mgr, deptno from emp ww ww where (mgr, deptno) in (select mgr, deptno from emp wwd where empno in (7900, 7902, 7934)); These two will require some research: Problem 11: Explain and tell the results: select empno, deptno, (select dname from dept where emp.deptno = dept.deptno) from emp; Problem 12: Explain and tell the results: select deptno, dname from dept where exists (select empno from emp where emp.deptno dept.deptno); wwww

Problem 10: Explain and tell the results: select empno, mgr, deptno from emp ww ww where (mgr, deptno) in (select mgr, deptno from emp wwd where empno in (7900, 7902, 7934)); These two will require some research: Problem 11: Explain and tell the results: select empno, deptno, (select dname from dept where emp.deptno = dept.deptno) from emp; Problem 12: Explain and tell the results: select deptno, dname from dept where exists (select empno from emp where emp.deptno dept.deptno); wwww

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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**Problem 10: Explain and tell the results:** ```sql select empno, mgr, deptno from emp where (mgr, deptno) in (select mgr, deptno from emp where empno in (7900, 7902, 7934)); ``` **Problem 11: Explain and tell the results:** ```sql select empno, deptno, (select dname from dept where emp.deptno = dept.deptno) from emp; ``` **Problem 12: Explain and tell the results:** ```sql select deptno, dname from dept where exists (select empno from emp where emp.deptno = dept.deptno); ```
Transcribed Image Text:**Problem 10: Explain and tell the results:** ```sql select empno, mgr, deptno from emp where (mgr, deptno) in (select mgr, deptno from emp where empno in (7900, 7902, 7934)); ``` **Problem 11: Explain and tell the results:** ```sql select empno, deptno, (select dname from dept where emp.deptno = dept.deptno) from emp; ``` **Problem 12: Explain and tell the results:** ```sql select deptno, dname from dept where exists (select empno from emp where emp.deptno = dept.deptno); ```
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