File systems are classified into the following four categories:
*Disk file system: A system used for storing and recovering the files on a storage device, such as a hard disk, floppy disks, CD-ROMs that is directly or indirectly connected to a computer.
*Network file system: It is a type of file system that provides access to files on other computers on a network. The primary function of network file system is to mount directories to other computers. These directories can then be accessed as though they were local. With the advent of network file system, shared file name spaces were possible – many computers could see and access the same files at the same time.
*Database file system: Earlier file system a hierarchial management structure, but in the database file system files are identified by their characteristics, like the name, type, topic and author.
*Special purpose file system: A file system where the files are organized by software during runtime. This type of file system is used for various purposes, such as communication between computer processes or temporary file space. The system can often high-speed interconnection networks that avoid some performance problems.
Categories of computer filing system
