NoSQL, short for "Not Only SQL," represents a family of database management systems designed for flexible and scalable data storage. Unlike traditional relational databases, NoSQL databases employ various data models like document, key-value, graph, and column-family, enabling them to handle diverse data types and structures. NoSQL databases are well-suited for applications requiring high data velocity and volume, such as web and mobile apps, IoT devices, and big data analytics. They offer horizontal scalability, strong performance, and support for distributed, non-tabular data storage, making them a valuable choice for modern, dynamic data management needs.
Practice Test
31. What is the primary motivation for NoSQL database scalability?
32. Which type of scalability involves adding more nodes to an existing system to handle increased load?
33. What is sharding in the context of NoSQL databases?
34. In CAP theorem, which property is closely related to scalability?
35. Which NoSQL database model is typically associated with excellent horizontal scalability?
36. What is the main advantage of horizontal scalability in NoSQL databases?
37. Which scalability type allows a system to handle more data by adding resources to a single machine?
38. What does "read scaling" refer to in NoSQL?
39. When dealing with NoSQL database scaling, what is data partitioning also known as?
40. Which factor typically presents a challenge to achieving scalability in NoSQL databases?