IBM Cloud Associate Developer — Question 4

Database for PostgreSQL is an example of which type of database?

Answer options

• A. Key-value
• B. Object-relational
• C. Document
• D. Graph

Correct answer: B

Explanation

PostgreSQL is classified as an Object-relational database because it supports both traditional relational database features and object-oriented programming concepts. The other options, such as Key-value, Document, and Graph databases, represent different types of database architectures that do not encompass the unique object-relational capabilities of PostgreSQL.