What Is a Centralized Database?

The centralized computer network consists of a large-scale central system whose terminals are clients. All data is stored in the central system and managed by the database management system. All processing is done by the large-scale system. The terminals are only used for input and output. The terminal does nothing on its own, and all tasks are processed on the host. The main feature of centralized data storage is the ability to keep all data in one place.

The centralized computer network consists of a large-scale central system whose terminals are clients. All data is stored in the central system and managed by the database management system. All processing is done by the large-scale system. The terminals are only used for input and output. The terminal does nothing on its own, and all tasks are processed on the host. The main feature of centralized data storage is the ability to keep all data in one place.

Chinese name

Centralized network

Applied discipline

computer science

Introduction to Centralized Network

Centralized network: A network with a star or tree topology, where all the information passes through the central node switch, and all kinds of links originate from the central node switch. Centralized management is the establishment of a comprehensive data system and information sharing mechanism for corporate decision-making through a centralized management system with the help of modern network communication technology. The centralized management system is installed on a single server. Users of each system log in to the system through the WAN , To achieve common operation of the same system, use and share the same database, through strict permission management and security mechanisms to achieve the same data management permissions consistent with the existing organizational structure. ^[1]

Centralized network centralized network management mode

The centralized network management mode is to set up a special network management node in the network system. The management software and management functions are mainly concentrated on the network management node, and the network management node and the managed node have a master-slave relationship. ^[1]

advantage:

Facilitates centralized management

Disadvantages:

(1) Management information is aggregated to the management node, and the information flow is crowded

(2) Management node failure will affect the work of the entire network ^[1]

Centralized network centralized data processing

The centralized computer network consists of a large-scale central system whose terminals are clients. All data is stored in the central system and managed by the database management system. All processing is done by the large-scale system. The terminals are only used for input and output. The terminal does nothing on its own, and all tasks are processed on the host. ^[1]

The main feature of centralized data storage is that all data can be stored in one place. Remote terminals in various offices are connected to the central computer (host computer) through cables, ensuring that each terminal uses the same information. Backing up data is easy because they are all stored on the server, and the server is the only system that needs to be backed up. This also means that this server is the only system that needs security protection, and the terminal does not have any data. The bank's ATM uses a centralized computer network. In addition, all transactions are processed on the host, and the terminal does not need a floppy drive, so the possibility of network infection is very low. The total cost of this type of network is relatively low, because the host has a large amount of storage space and a powerful system, so that the terminal can use simple and cheap microcomputers and other terminal equipment. ^[1]

The downside of this type of network is that the calculations from all terminals are done by the host, and the processing speed of this type of network may be somewhat slow. In addition, if users have different needs, it may be very difficult to meet these needs on a centralized computer network, because each user's applications and resources must be set up separately, and these applications and resources must be in the same It is operated on a centralized computer, which makes the system inefficient. Also, because all users must be connected to a central computer, centralized connectivity can become a big problem for centralized networks. Because of these limitations, most networks today use distributed and collaborative network computing models. ^[1]