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+# Questions
+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?
+    >A. Yes
+    B. No 
+---
+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?
+
+    >A. User details
+    B. Input and Output (number and factorial)
+    C. User's Amazon orders
+---
+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
+    B. Input and Output (number and factorial)
+    C. AWS credentials
+    D. Passwords
+---
+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
+    B. Foreign key
+    C. Tuple
+    D. Index
+
+---
+# Answers
+1. A. `Yes`
+2. C `User's Amazon orders`
+3. C `AWS credentials`
+4. A `Primary key`
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