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database/mcqs/01-database-fundamentals.md
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# Questions # Questions
1. Joe Bloggs wants to create a website which returns the factorial of a number given by the user. 1. Joe Bloggs wants to create a website which returns the factorial of a number given by the user.
Should Joe store this result in a database? Should Joe store this result in a database?
>A. Yes >A. Yes \
B. No B. No
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2. The website is a hit. Now Joe wants to show user their past results. So he has the store the values in a database. 2. The website is a hit. Now Joe wants to show user their past results. So he has the store the values in a database.
Which of the following should not be in the database? Which of the following should not be in the database?
>A. User details >A. User details \
B. Input and Output (number and factorial) B. Input and Output (number and factorial) \
C. User's Amazon orders C. User's Amazon orders
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3. Joe Bloggs decides to use a MySql database. But he puts all his data in the database. Which of the following can he store as file? 3. Joe Bloggs decides to use a MySql database. But he puts all his data in the database. Which of the following can he store as file?
>A. User details >A. User details \
B. Input and Output (number and factorial) B. Input and Output (number and factorial) \
C. AWS credentials C. AWS credentials \
D. Passwords D. Passwords
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4. Joe Bloggs want to uniquely identify whenever a user ran a calculation. What feature of a database can he use to achieve that? 4. Joe Bloggs want to uniquely identify whenever a user ran a calculation. What feature of a database can he use to achieve that?
>A. Primary key >A. Primary key \
B. Foreign key B. Foreign key \
C. Tuple C. Tuple \
D. Index D. Index
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