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Punitha
Punitha

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Introduction to Data

What is Data?
Data refers to raw facts, figures, observations, or values that are collected and stored for processing.

Student ID     Name     Marks
101            Vijay    90
102            John     85
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  • 101,102 are data

  • Names are data

  • Marks are data

Types of Data:

  • Numerical Data - Data represented by numbers 
Age = 21
Salary = 50000
Marks = 90
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  • Text Data - Data represented by letters or words 
Name = John
City = Chennai
Department = CSE
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  • Data and Time Data 
20-07-2026
10:30 AM
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Why is Data Important?

  • Decision Making

  • Analysis and Reporting

  • Business Information

  • Performance Tracking

  • Databases Applications

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