Database concept Introduction

Database concept

Introduction

» File System

» Database Management

System

» Rational Data Model

» Keys in a Relational

Database concept

“Inconsistency of your mind… Can
damage your memory… Remove the
inconsistent data… And keep the original
one !!!”
— Nisarga Jain

Introduction

After learning about importance of data in the

previous chapter, we need to explore the methods

to store and manage data electronically. Let us

take an example of a school that maintains data

about its students, along with their attendance

record and guardian details.

The class teacher marks daily attendance of the

students in the attendance register. The teacher

records ‘P’ for present or ‘A’ for absent against

each student’s roll number on each working day.

If class strength is 50 and total working days

in a month are 26, the teacher needs to record

50×26 records manually in the register every

month. As the volume of data increases, manual

data entry becomes tedious. Following are some

of the limitations of manual record keeping in

this example:

Database Concepts

Rationalised 2023-24

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