What does MySQL access port mean_ What is the port number of the database port

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Connect SQL data library , If the port number is not specified, the default port number is 1433?

SQL Server The default listening port number of the server is 1433, If the port of the server is not 1433, Simple linking methods can be found on the server IP Write a comma after the address and specify the port , for example :

How to set up sqlserver Port number

Can be in ’ Configuration tool ’–>’SQL SERVER Configuration manager ’—>’SQL SERVER The network configuration ’ —>’ Instance name .

agreement ’ –>’TCP\IP attribute ’ As shown in the figure below :

Be careful TCP Port modification , Dynamic ports do not need to be opened , If open , Or fill in any number , The following ports will be invalid .

After the modification is completed, you can restart to use the server name + Port number login .

About the database port number and server port number

Generally, there is no problem , The database USES TCp/ip The port number of the protocol ,tomcat It uses http Port number , If two 8080 There are conflicts , You can manually set the port number of one of them .

oracle Database port number

answer ：SQL Server yes 1433 , oracle yes 1521

DNS What is the default port for ?

DNS The default port is 53.

DNS Ports are divided into TCP and UDP.

One 、CP It is used for area transmission .

Two 、UDP Is used to do DNS Analytic .

DNS brief introduction :

DNS(Domain Name System, The domain name system ), World Wide Web as domain name and IP A distributed database with address mapping , It can make it easier for users to access the Internet , Instead of remembering what can be read directly by the machine IP Number string .

By domain name , Finally, we get the corresponding IP The process of address is called domain name resolution ( Or hostname resolution ).

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