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Which of the following is an example of a relational DBMS ?

  • A.MySQL
  • B.MongoDB
  • C.Cassandra
  • D.Hadoop

Answer: A

The relational DBMS is MySQL.

MySQL stores data in tables of rows and columns, uses SQL and enforces keys and relationships, which makes it a relational database management system.

MongoDB is a NoSQL document database, Cassandra a NoSQL wide-column store, and Hadoop a framework for distributed storage and processing of big data, not an RDBMS.

Other relational DBMSs include Oracle Database, PostgreSQL and Microsoft SQL Server.

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