INTRODUCTION
File
- A data structure in a file system which maps to names to file system objects such as files or other directories.
- File Structure
- A pattern for arranging data in a file.
- Algorithm
- A finite set of well-defined rules for the solution of a problem in a finite number of steps.
- Data Structure
- A pattern for organizing data in a program.
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File Access
- Storage which loses its contents when power is removed.
- Storage which retains its contents when power is removed.
- Information which is retained after execution of the program which created it.
- Goals for Design of File Structures and Algorithms
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- Minimize the number of disk accesses.
- If possible, transfer all information needed in one access.
- Group related information physically so it can be accessed together.
Problems and Concerns
- File data is frequently dynamic - that is, it changes from time to time.
- Designing file structures for changes adds complexity.
- Typical file sizes are growing.
- Solutions which work for small files may be inadequate for large files.
- File structures, algorithms, and data structures must work together.
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GOOD EVENIN ,
ReplyDeletei am a master degree student. in fact , i have this subject "File structure" this year and I have been told by my teacher it is the most difficult subject i will never seen in my life and i know teacher shouldn't be saying that instead should be encouraging and motivating to go on no matter what obstacles we face ! I want to know in brief what are the major points to handle this subject professionally ? I want to master it.
It's very helpful to me.. Thank you
ReplyDeletesir