find uniq data Consider below EMPLOYEE table as the source dataCREATE TABLE EMPLOYEE (EMPLOYEE_ID NUMBER(6,0),NAME VARCHAR2 ( 20),SALARY NUMBER(8,2)):INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (100, 'Jennifer',4400);INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (100, 'Jennifer',4400);INSERT INTO EMPLOYEE ( EMPLOYEE_ID, NAME, SALARY) VALUES (101, 'Michael',13000);INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (101, 'Michael',13000);INSERT INTO EMPLOYEE (EMPLOYEE_ID,NAME, SALARY) VALUES (101, 'Michael',13000);INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (102, 'Pat',6000);INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (102, 'Pat',6000);INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (103, 'Den', 11000);SELECT FROM EMPLOYEE;EMPLOYEE_IDNAMESALARY100Jennitor4400100Jervifer4400101Michael13000101Michael13000101Michael13000102Pat6000102Pat6000103Den11000

logic:- use distinct keyword to filter distinct rows from a table. Syntax:- select distinct…

Answered: find uniq data

Engineering

Computer Science

find uniq data

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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Concept explainers

Normalization

Normalization is the process of eliminating redundancy in a database by organizing the data into several smaller tables. The large tables are normalized (converted) into smaller tables by using normalization rules, so that a database administrator can easily handle them. It also eliminates insertion, deletion, and update anomalies.

Question

find uniq data

Consider below EMPLOYEE table as the source data
CREATE TABLE EMPLOYEE (
EMPLOYEE_ID NUMBER(6,0),
NAME VARCHAR2 ( 20),
SALARY NUMBER(8,2)
):
INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (100, 'Jennifer',4400);
INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (100, 'Jennifer',4400);
INSERT INTO EMPLOYEE ( EMPLOYEE_ID, NAME, SALARY) VALUES (101, 'Michael',13000);
INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (101, 'Michael',13000);
INSERT INTO EMPLOYEE (EMPLOYEE_ID,NAME, SALARY) VALUES (101, 'Michael',13000);
INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (102, 'Pat',6000);
INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (102, 'Pat',6000);
INSERT INTO EMPLOYEE (EMPLOYEE_ID, NAME, SALARY) VALUES (103, 'Den', 11000);
SELECT FROM EMPLOYEE;
EMPLOYEE_ID
NAME
SALARY
100
Jennitor
4400
100
Jervifer
4400
101
Michael
13000
101
Michael
13000
101
Michael
13000
102
Pat
6000
102
Pat
6000
103
Den
11000

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