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JAVA
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Data Structure
Types of Database
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Q1.

Which database uses tables to store data?
A. MongoDB
B. Redis
C. MySQL
D. Neo4j

Q2.

Which of the following is a NoSQL database?
A. Oracle
B. PostgreSQL
C. MongoDB
D. SQL Server

Q3.

Which key is used to link two tables?
A. Primary Key
B. Unique Key
C. Foreign Key
D. Composite Key