Database & IT Law
JKSSB Sub-Inspector (Telecommunication) · Computer Science & Networking Systems · 18 practice questions with answers and explanations: 3 Easy, 9 Medium, 6 Hard.
Sample questions
Sample Easy question 1
What does a 'primary key' refer to in a database table?
- A unique identifier for each record
- A password to access the database
- A backup copy of data
- A type of query
Show answer
Answer: A. A primary key uniquely identifies each record in a database table.
Sample Medium question 2
What does 'AI' stand for?
- Artificial Intelligence
- Automated Interface
- Advanced Internet
- Applied Informatics
Show answer
Answer: A. AI stands for Artificial Intelligence.
Sample Hard question 3
In database design, what does a 'primary key' ensure?
- Uniqueness of each record in a table
- Faster internet speed
- Data encryption
- Data compression
Show answer
Answer: A. A primary key uniquely identifies each record in a database table.