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
41. What is a key characteristic of NoSQL databases with regard to schema?
Answer:Flexible schema
42. Which term describes the ability of NoSQL databases to accommodate changes in data structure?
Answer:Schema-less
43. In a schema-less NoSQL database, data is typically stored in what format?
Answer:Documents
44. What is one of the main advantages of schema-less design in NoSQL databases?
Answer:Flexibility in data modeling
45. Which type of NoSQL database is commonly associated with schema-less design?
Answer:Document Stores
46. In a schema-less NoSQL database, how is data organized and stored?
Answer:As semi-structured documents
47. What is the primary challenge of schema-less design in NoSQL databases?
Answer:Complex data validation
48. Which of the following best describes the schema evolution in schema-less databases?
Answer:A dynamic schema that evolves over time
49. Schema-less design in NoSQL databases is well-suited for applications that require what?
Answer:Rapid schema changes
50. What aspect of schema-less design in NoSQL databases promotes rapid development and prototyping?