What is a main benefit of using a document database?

The main benefit of using a document database is its ability to allow for more flexible and hierarchical data storage. Document databases store data in formats such as JSON, BSON, or XML, which can easily accommodate various data structures. This flexibility enables developers to store complex, nested data directly alongside more straightforward key-value pairs in the same document, allowing for the representation of real-world entities and relationships in a way that traditional relational databases do not easily support.

This flexibility is particularly advantageous for applications that require rapid changes in data structures or need to handle unstructured or semi-structured data. In cases where the relationships among data items are complex and do not fit neatly into tables, document databases excel by providing a more natural and intuitive approach to data modeling.

Other options, while they may relate to specific use cases or features of other types of databases, do not capture the essential attribute that document databases offer, which is this enhanced flexibility in data representation and structure.