Associate Software Trainee Interview Questions and Answers for Freshers

Types of databases include relational, NoSQL, object-oriented, and graph databases.

• Relational databases store data in tables with rows and columns (e.g. MySQL, PostgreSQL)

• NoSQL databases store data in a non-tabular format, often using JSON or XML (e.g. MongoDB, Cassandra)

• Object-oriented databases store data as objects, with attributes and methods (e.g. db4o)

• Graph databases use graph structures for semantic queries (e.g. Neo4j)