Which type of database is needed?

Cloud databases refer to database services hosted on cloud computing platforms, providing scalable and flexible resources. While they can host various database types, "cloud" does not indicate a specific capability to handle multiple data models. Therefore, it lacks the specificity required to address the need for varied data formats.

Distributed databases involve data stored across multiple locations or nodes to improve performance and availability. While they may support different data models, the term "distributed" does not inherently imply the capability to handle diverse formats like columnar or graph. Thus, it does not directly address the requirement specified in the question.

Object-oriented databases are designed to store data in the form of objects, similar to object-oriented programming. While they can manage complex data relationships, they are not inherently suited for a wide variety of data models, such as columnar or graph formats. This limits their applicability for the scenario presented.