What are the advantages of NoSQL over traditional RDBMS?
Câu trả lời
NoSQL databases offer several advantages over traditional Relational Database Management Systems (RDBMS). Here are the key benefits:
1. Scalability
Horizontal Scaling: NoSQL databases are designed to scale out by adding more servers to distribute the load, which is more cost-effective and easier to manage compared to the vertical scaling (adding more power to a single server) typically required by RDBMS[1][4][16].
Elasticity: NoSQL databases can handle large volumes of data and high traffic loads by dynamically adding or removing nodes, ensuring consistent performance even under heavy loads[16][17].
2. Schema Flexibility
Dynamic Schemas: NoSQL databases do not require a predefined schema, allowing for the storage of unstructured, semi-structured, and structured data. This flexibility is particularly useful for applications where the data model is constantly evolving[1][2][12].
Ease of Development: The lack of a rigid schema allows developers to make changes to the data model without significant downtime or complex migrations, facilitating agile development practices[17].
3. Performance
High Throughput: NoSQL databases are optimized for high read and write throughput, making them suitable for real-time applications such as social media, gaming, and IoT[2][4][16].
Efficient Data Retrieval: NoSQL databases can retrieve data more efficiently by using key-value pairs, document stores, or other non-relational models, which can be faster than the complex joins required in RDBMS[3][16].
4. Handling Unstructured Data
Versatility: NoSQL databases can store and manage diverse data types, including JSON documents, graphs, key-value pairs, and wide-column stores, making them ideal for applications that deal with varied and unstructured data[1][2][12].
Big Data: They are particularly well-suited for big data applications, where the volume, velocity, and variety of data exceed the capabilities of traditional RDBMS[4][16].
5. Cost-Effectiveness
Lower Infrastructure Costs: NoSQL databases often use commodity hardware and open-source software, reducing the overall cost of ownership compared to the expensive, high-end servers required for scaling RDBMS[8][16].
Reduced Administrative Overhead: Many NoSQL databases offer features like automatic sharding and replication, which simplify database management and reduce the need for specialized DBA skills[16].
