What are the characteristics of distributed database systems?

The characteristics of distributed database systems include data consistency, concurrent access, distributed computing, load balancing, scalability, security and reliability, etc. Detailed introduction: 1. Data consistency. A distributed database system stores data through multiple servers, so the consistency of the data is jointly maintained by multiple servers. Each server can store and update data independently, but they must abide by the consistency. Constraints, such as transaction isolation level, data integrity, etc.; 2. Concurrent access, the distributed database system can support multiple users to read and write data at the same time, etc.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

A distributed database system is a database system composed of multiple servers. It can distribute data on multiple servers to improve data security and reliability. The following are some characteristics of distributed database systems:

1. Data consistency

Distributed database systems store data through multiple servers, so the consistency of the data is jointly maintained by multiple servers. In a distributed database system, each server can store and update data independently, but they must comply with consistency constraints, such as transaction isolation level, data integrity, etc. If a server fails, other servers can take over the data to ensure data consistency.

2. Concurrent access

The distributed database system can support multiple users to read and write data at the same time. This method can improve the concurrency and flexibility of the system. In a distributed database system, multiple users can connect to the same server through the network to achieve concurrent access.

3. Distributed computing

Distributed database systems can distribute data on multiple servers to support distributed computing. In a distributed database system, multiple servers can process data at the same time, thereby improving the computing performance and efficiency of the system.

4. Load balancing

Distributed database systems can distribute data on multiple servers, so load balancing can be achieved. In a distributed database system, multiple servers can distribute data to different server nodes according to load balancing algorithms, thereby improving system availability and performance.

5. Scalability

Distributed database systems can expand the capacity of the system by adding server nodes. In a distributed database system, multiple servers can be connected to the same server through the network to achieve data sharing and storage. Therefore, a distributed database system can automatically expand the system's capacity based on demand.

6. Security and Reliability

Distributed database systems can distribute data across multiple servers, thus improving data security and reliability. In a distributed database system, each server can store and update data independently, but they must comply with consistency constraints, such as transaction isolation level, data integrity, etc. In addition, multiple servers can be connected to the same server through the network to achieve load balancing and distributed computing, thereby improving system reliability.

In short, a distributed database system has the characteristics of data consistency, concurrent access, distributed computing, load balancing, scalability and security. In practical applications, distributed database systems can be used to store and process large amounts of data, and can support high availability and high performance.

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