What is a significant characteristic of NoSQL databases?

A significant characteristic of NoSQL databases is that they use non-tabular relations for data modeling. This means that NoSQL databases can store and manage data in a variety of formats that do not conform to traditional relational database structures. Instead of using tables with rows and columns, NoSQL databases might use document-based, key-value pairs, wide-column stores, or graph formats, allowing for more flexible data representation.

This flexibility is advantageous in many scenarios, especially when dealing with unstructured or semi-structured data, which is common in applications requiring quick and scalable access to data. It also enables better handling of data that can vary in structure, making NoSQL databases particularly useful for big data applications and real-time web applications.

The characteristics of NoSQL databases highlight their strengths in scalability and performance when working with large volumes of diverse data types and their ability to support a variety of data models, which contrasts significantly with traditional SQL databases that rely on rigid schemas and complex joins.