There are thousands of customers in an ABC Bank who use ATM services.

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
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There are thousands of customers in an ABC Bank who use ATM services. The ABC Bank stores its ATM users’ data in a database table where records are sorted based on Account Numbers as below:

 

ATM Card #

Account #

PIN

Name

Balance (Rs.)

11122230

Ac321

999

Ali

5,000

11122231

AC431

888

Hina

3,000

11122232

AC453

777

Saad

8,000

11122233

AC534

666

Fahad

9,000

 

when Fahad inserts his ATM card, he enters PIN and the main screen appears which shows his Name and other details. The authentication system searches the provided ATM Card # in database table. If ATM Card # is found, the system authenticates the user by matching the input PIN with stored PIN and returns Fahad’s profile data.

 

So, From the given array of ATM Card numbers i.e.

 

to find Fahad’s ATM Card #

 

a)      Which searching technique is suitable (linear search, binary search)

[1]

b)      Justify your answer

[1]

c)      Write the code for your chosen search technique

[3]

 

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