Page 164 - DCAP403_Operating System

Unit 8: File Management

Flat fi le system is a fi le system where is no subdirectories and everything is stored at the Notes
same (root) level on the media, be it a hard disk, floppy disk, etc.

Directory is simple file containing the indexing of other files, which may in turn be

directories if a hyerarchical indexing scheme is used.
8.13 Keywords

Directory: It is simple file containing the indexing of other files, which may in turn be directories

if a hyerarchical indexing scheme is used.

Disk fi le system: It is a file system designed for the storage of files on a data storage device, most
commonly a disk drive, which might be directly or indirectly connected to the computer.
File manager: It is an integral part of the operating system which is responsible for the maintenance
of secondary storage.
File system: It is a set of abstract data types that are implemented for the storage, hierarchical
organization, manipulation, navigation, access, and retrieval of data.
File: It is a named collection of data stored in a device.

Flash fi le system: It is a file system designed for storing fi les on flash memory devices.

Flat fi le system: It is a file system where no subdirectories are present and everything is stored at

the same (root) level on the media, be it a hard disk, floppy disk, etc.

Network fi le system: It is a file system that acts as a client for a remote file access protocol,

providing access to files on a server.

8.14 Self Assessment
Fill in the blanks:

1. Shareable files are those that can be accessed .......................... and by .......................... .
2. Three major methods of allocating disk space are .........................., .......................... and
.......................... .

3. The difficulty with contiguous allocation is .......................... for a new fi le.
4. There is no external fragmentation with .......................... allocation.
5. FAT stands for .......................... .
6. NTFS stands for .......................... .
7. Direct access is based on a .......................... of a fi le.
8. .......................... files support both formatted and unformatted record types.

9. A .......................... system is a file system designed for storing fi les on fl ash memory
devices.
10. A .......................... is a collection of letters, numbers and special characters.
11. The hierarchical file system was an early research interest of .......................... .

8.15 Review Questions

1. What is a directory? Can we consider a directory as a file? Explain your answer.

2. What is a fl ash file system? Give an example of it.

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