Why do some operating systems support specific types of file structures and why do some operating systems don’t?
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The reason of having the system support different file structures is that the support comes from the system; individual applications are not required to provide the support. In addition, if the system provides support for different file structures, it can implement the support presumably more efficiently than an application.
The disadvantage of having the system provide support for defined file types is that it increases the size of the system. In addition, applications that may require different file types other than what is provided by the system may not be able to run on such systems. An alternative strategy is for the operating system to define no support for file structures and instead treat all files as a series of bytes. This is the approach taken by UNIX systems. The advantage of this approach is that it simplifies the operating system support for file systems, as the system no longer has to provide the structure for different file types. Furthermore, it allows applications to define file structures, thereby alleviating the situation where a system may not provide a file definition required for a specific application.
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Why do some operating systems support specific types of file structures and why do some operating systems don’t?
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