Which of the following is NOT a characteristic of MongoDB?

One of the defining characteristics of MongoDB is its ability to handle unstructured data, which is particularly valuable in modern applications where data formats can vary significantly. MongoDB operates as a NoSQL database, which means it is designed for flexibility in data types, allowing developers to store data without the rigid schema constraints often found in traditional relational databases.

A critical feature of MongoDB is its scalable architecture, enabling the database to expand and manage increasing volumes of data efficiently. This architecture supports horizontal scaling, allowing for the addition of more servers to accommodate growth.

In contrast to the other attributes, MongoDB does not impose fixed schema requirements. Traditional databases require a predefined schema, meaning the structure of the data must be determined before any data can be entered. MongoDB allows for dynamic schema design, where the structure of the data can evolve alongside the application development, making it much more adaptable to changing data needs.

Therefore, the assertion that MongoDB has fixed schema requirements is incorrect, as its flexibility in schema design is one of its core strengths, allowing for a more agile and responsive data management approach.