First, Chinese is a region.
Domain is a first-class Chinese character in the General Standard of Chinese. The ancient Chinese writing of domain is "or (yù)", with a region on the left and a "ge" on the right. There is a difference between adding "earth" and "domain" to seal script. "Domain" is the differentiation word of "or". Its original meaning refers to a place within a certain boundary, and by extension refers to fiefs and countries.
Second, the scope is in mathematics.
The set of numbers including all positive and negative integers and positive and negative fractions is called rational number, and the range of numbers is extended to this point, where addition, subtraction, multiplication and division can be freely performed. This set of numbers that can be added, subtracted, multiplied and divided freely is called a field. Therefore, it can be said that all rational numbers constitute a domain. Although all rational numbers form a domain, the domain does not only refer to rational numbers. Besides rational numbers, there are irrational numbers. Rational numbers and irrational numbers * * * are isomorphic to real numbers, and all real numbers also constitute fields.
Third, computer vocabulary is a symbol.
Domain is a computer-specific vocabulary, which refers to a unit that runs independently in the Windows network. Domain has different meanings in different systems and software: domain is not only the logical organizational unit of Windows network operating system, but also the logical organizational unit of Internet. In the Windows network operating system, the domain is the security boundary.
Application of domain in computer field
The domain controller contains a database consisting of accounts, passwords and computers belonging to the domain. When a computer is connected to the network, the domain controller must first identify whether the computer belongs to the domain, whether the login account used by the user exists and whether the password is correct.
If one of the above information is incorrect, the domain controller will refuse the user to log in from the computer. If you can't log in, users can't access the resources that the server has the right to protect. He can only access the resources enjoyed by Windows * * as a peer-to-peer network user, thus protecting the resources on the network to some extent.
To add a computer to a domain, it is not enough for it and the server to "see" each other in the online neighborhood. The network administrator must make the appropriate settings before adding this computer to the domain. Only in this way can you enjoy the file. Centralized and unified, easy to manage.