2.Delete the employee who has the longest employment in the company (1 point)OL> de ve deptiDEPTHOTIHAMILOCOT HULL MUMBER(2)HARCHA HZC14PARCHARZC13)4OT HULL HUMBERC4>EMPHOT HAMEJOBPARCHARZ C9>HIREDATEDATEMUMBERCY.2)COMMBEPTHOA. O delete from emp where (hiredate, deptno) in (select max(hiredate), deptno fromemp group by deptno);B. delete from emp where hiredate in (select max(hiredate) from emp;C. O delete from emp where hiredate in (select min(hiredate) from emp);D. O delete from emp s where s.hiredate in (select min(t.hiredate) from emp t wheret.deptno = s.deptno);E. O delete from emp s where s.hiredate = (select min(t.hiredate) from emp t),

The correct answer for the following MCQ will be: C) delete from emp where hiredate in (select…

Answered: MOT HULL NUMBERC2> ARCHA R2 C14)…

MOT HULL NUMBERC2> ARCHA R2 C14) PARCHARZC13) Type HOT HULL NUMBERC4> UARCHAR2CI> WARCHARZC9 HUMBERC4 DATE NUMBER7,2> NUMBERCY.2) INUMBERC2) Fom emp where (hiredate, deptno)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

2.
Delete the employee who has the longest employment in the company (1 point)
OL> de ve depti
DEPTHO
TIHAMI
LOC
OT HULL MUMBER(2)
HARCHA HZC14
PARCHARZC13)
4OT HULL HUMBERC4>
EMPHO
T HAME
JOB
PARCHARZ C9>
HIREDATE
DATE
MUMBERCY.2)
COMM
BEPTHO
A. O delete from emp where (hiredate, deptno) in (select max(hiredate), deptno from
emp group by deptno);
B. delete from emp where hiredate in (select max(hiredate) from emp;
C. O delete from emp where hiredate in (select min(hiredate) from emp);
D. O delete from emp s where s.hiredate in (select min(t.hiredate) from emp t where
t.deptno = s.deptno);
E. O delete from emp s where s.hiredate = (select min(t.hiredate) from emp t),

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#ifndef NODES_LLOLL_H#define NODES_LLOLL_H #include <iostream> // for ostream namespace CS3358_SP2023_A5P2{ // child node struct CNode { int data; CNode* link; }; // parent node struct PNode { CNode* data; PNode* link; }; // toolkit functions for LLoLL based on above node definitions void Destroy_cList(CNode*& cListHead); void Destroy_pList(PNode*& pListHead); void ShowAll_DF(PNode* pListHead, std::ostream& outs); void ShowAll_BF(PNode* pListHead, std::ostream& outs);} #endif #include "nodes_LLoLL.h"#include "cnPtrQueue.h"#include <iostream>using namespace std; namespace CS3358_SP2023_A5P2{ // do breadth-first (level) traversal and print data void ShowAll_BF(PNode* pListHead, ostream& outs) { cnPtrQueue queue; CNode* currentNode; queue.push(lloLLPtr->getHead()); while (!queue.empty()) { currentNode = queue.front(); queue.pop(); if…