# DynamoDB It's a [[NoSQL]] [[Database]] from [[AWS]] ## Differences from SQL Database - Records of a table can have different fields - Tables can be partitioned using **partition keys**, I think you cannot query *fast* across different partitions. I think an analogy to **partition keys** would be like having a table across multiple databases in [[SQL]] Databases - Tables also have **sort keys**, this determines how records are ordered, and you can only query contiguous records, I think you cannot filter nor change the order (maybe only reverse the default order) - So basically **partition keys** and **sort keys** determines how the table can be queried. This limitations is the tradeoff that makes [[DynamoDB]] fast. - There are some advantages with the connection management, I think it allows a lot more concurrent connections, but I don't know the details. ## Use cases - High scalability - Better integration with serverless architecture, because of better connection management ## What led to learning this - Podcast: Full Stack Radio: 139: Alex DeBrie - DynamoDB for Relational Database Diehards