SQL databases are based on the relational model, meaning they store data in tables with rows and columns. NoSQL databases are non-relational or "not only SQL" databases, which means they can store data in a variety of ways, including but not limited to documents, key-value pairs, graphs, and column-oriented. SQL databases are more rigid in their structure but offer benefits in terms of performance and scalability. NoSQL databases are more flexible but may sacrifice some performance and scalability.SQL databases are based on the relational model, meaning they store data in tables with rows and columns