This document explains the concept of databases using an analogy of hosting an event, where tracking guests is compared to managing data. It emphasizes the efficiency of databases over manual systems, highlighting how data is organized in tables with specific columns for easy retrieval using query language like SQL. The overall message promotes the utility and simplicity of using databases for data management.

1. Compiled by: Anshul
Apna
College LPU
What is
DATABASE

2. Compiled by: Anshul
Apna
College LPU
To understand how a database
works, imagine you're
hosting a event

3. Compiled by: Anshul
Apna
College LPU
On the day of the Event, your guests
start to arrive and you need to keep
track of them all so that you can seat
them properly

4. You could write their names on pieces of
paper and store them in a filing cabinet
or box, but this would be inefficient and
hard to manage any changes
Compiled by: Anshul
Apna
College LPU

5. A better way to keep track of these
guests is to use a database
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Database
Client
Server

6. A database is like an electronic filing
system that stores data in an organized
manner so it can be quickly retrieved
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7. In our example, let's say we want to
store each guest's name, age and
dietary restrictions
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8. Column 1 Column 2 Column 3
Column 1 Column 2 Column 3 Column 1 Column 2 Column 3
We first create a database table with
individual columns for each piece of
information (name, age, dietary restrictions)
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9. Then we enter the data into the table by
creating a row for each guest
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10. Finally, when we want to retrieve information
about one particular guest, we use a query
language like SQL to search our database and
find the exact record that matches our criteria.
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<MY SQL>

11. This makes it easy to keep track of all our
guests without having to manually search
through hundreds of pieces of paper.
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