software system

Computer software system

This entry is made by Compilation and application of scientific encyclopedia entries of "Science Popularization China" to examine.

Software Systems refers to software systems systems software 、 Supporting software And application software, which is computer system The part of a computer that consists of software.

Chinese name: software system
Foreign name: Software Systems

Composition: systems software Support software and application software
Application: Manage computer resources, etc

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systems software

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systems software It is responsible for controlling and coordinating computers and peripheral A class of computer software that supports the development and operation of application software. System software generally includes operating system Language processor 、 database system and network management system 。 System software enables computer users and other software to regard the computer as a whole without considering how each hardware at the bottom works.

Supporting software

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Supporting software It provides application software design, development, testing, evaluation, operation testing, etc. between system software and application software Accessibility Software, sometimes with middleware Form exists.

Application software

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Application software is corresponding to system software, and is a variety of Programming language , as well as in various programming languages application program Set of, divided into Application software package and User program 。 Application software package is a collection of programs designed to solve certain problems with computers, which is often used by users. Application software is the part of software provided to meet the application needs of users in different fields and different problems. It can broaden computer system Of application area , amplify the function of hardware. Application software is directly oriented to users' needs, and they can directly help users improve Quality of work And efficiency can even help users solve some problems. Application software is generally divided into two categories: one is practical software developed for specific needs, such as Accounting software , scene setting system Engineering budget software And educational aid software, etc.: the other is a kind of tool software provided to facilitate users to use computers, such as Word for word processing AutoCAD And for system maintenance Of Rising antivirus software Etc.

Distributed software system

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Distributed software system (Distributed Software Systems) distributed processing The software system of multiprocessor Architecture The system on which the task is executed. It includes Distributed operating system Distributed Programming language And its compilation (interpretation) system distributed file system and Distributed database system Etc.

Distributed operating system is responsible for managing distributed processing system resource And control the running of distributed programs. It differs from the centralized operating system in that resource management 、 Process communication and System structure And so on.

Distributed programming languages are used to write programs that run on Distributed computer system Distributed program on. A distributed program is composed of several independent Program module They are distributed on multiple computers of a distributed processing system and executed simultaneously. It is different from centralized Programming language It has three characteristics: distribution, communication and robustness 。

distributed file system With remote execution File access And manage and access files distributed on the network in a transparent manner.

Distributed database system By a number of database system It provides effective access means to manipulate the sub databases on these nodes. Distributed database In use, it can be regarded as a complete database, but actually it is distributed on geographically dispersed nodes. Of course, the sub databases distributed on each node are logically related.

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