Key differs from primary keyKey is usually the index synonym. If the keyword attribute primary key is given in the column definition, then primary key can also be specified as key only. The purpose of this is to be compatible with other database
System callsThe main function of the operating system is to manage hardware resources and provide a good environment for application developers, but the various hardware resources of the computer system are limited, so that every process can be
Copies the original key entry. See-keyclone.
Generates a new self-signed certificate for the replica with the new feature name. See below.
Generate a certificate signing request for the replication item and import a reply certificate or certificate
Linux file prefetching algorithm the development of disk I/O performance lags far behind CPU and memory, thus becoming a main bottleneck of modern computer system. Prefetching can effectively reduce the number of disk seek and the application of I/O
Detailed usage of C language file read/write operations
C file operations1. Read one file to another, and use "(ch = getc (fp ))! = EOF "to determine whether the file ends. If
The file size is the same as the size of the original file.
Text or
Detailed usage of C language file read/write operationsC file operations1. Read one file to another, and use "(ch = getc (fp ))! = EOF "to determine whether the file ends. IfThe file size is the same as the size of the original file.Text or binary
How does the computer room manage the vast amount of information it holds? Windows Disk Management program provides us with a rigorous and efficient organization of information-the information on the hard disk is managed in the form of a
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Basic file I/O
I think open,
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