# SELECT EMP_LNAME, EMP_FNAME, EMP_AREACODE, EMP_SEX FROM EMPLOYEE WHERE EMP_SEX = 'F' AND EMP_AREACODE = '615' ORDER BY EMP_LNAME, EMP_FNAME; What is the likely data sparsity of the EMP_SEX column?

### Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482

Chapter
Section

### Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
Chapter 11, Problem 1P
Textbook Problem
228 views

## SELECT EMP_LNAME, EMP_FNAME, EMP_AREACODE, EMP_SEX FROM EMPLOYEE WHERE EMP_SEX = 'F' AND EMP_AREACODE = '615' ORDER BY EMP_LNAME, EMP_FNAME; What is the likely data sparsity of the EMP_SEX column?

Program Plan Intro

Data sparsity:

• The number of unique values a column could contain is referred as data sparsity.
• Data sparsity can be classified into two types and they are:
• Low sparsity:
• When a column contains minimum number of unique values is called as low sparsity.
• Consider the column named gender; gender can contain only two different values namely ‘male’ and ‘female’ and this is considered to be a low sparsity.
• High sparsity:
• When a column contains maximum number of unique values is called as low sparsity.
• Consider the column named Birthdate; Birthdate can contain multiple different values and this is considered to be a high sparsity.
• The appropriate use of index can be determined by knowing the sparsity.

### Explanation of Solution

Data sparsity of the column “EMP_SEX”:

• The data sparsity for the column “EMP_SEX” could contain is “low sparsity” because the column can ...

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