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physical file system in operating system
The document discusses different types of physical file systems. It describes pile, direct, sequential, and indexed file systems. Pile files collect data in the order they arrive without organization. Sequential files store and retrieve records serially one after another from the beginning of the file. Indexed files contain indexes that allow records to be accessed through the index fields rather than sequential searching.
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Introduction to the topic of physical file systems by Priya.G.
File systems reside on secondary storage, allowing efficient data handling with functions like WRITE, READ, DELETE.
Different components of file systems include physical and logical layers, file organization modules, and I/O control.
Overview of various types of physical file systems: Pile, Sequential File, and Indexed File.
Pile File System collects data in order of arrival. Access is by exhaustive search; it's a simple form of organization.
Sequential File System processes records in order, requiring searches from the beginning and returns 'not found' if unmatched.
Indexed File System utilizes exhaustive and partial indexes, allowing access to records through their indexes.
A concluding slide thanking the audience for their presence and patience during the presentation.
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physical file system in operating system
- 1. Download this andopen it with microsoft power point and press f5 to watch out
- 2. Physical s File system By Priya.G
- 3. FILE SYSTEM • resides on secondary storage (disks) Provide efficient and convenient access to disk by allowing data to be : WRITE CREATE OPEN CLOSE DELETE READ
- 4. STRUCTURE OF AFILE PHYSICAL FILE SYSTEM LOGICAL FILE SYSTEM FILE ORGANIZATION MODULE BASIC FILE SYSTEM I/0 CONTROL DEVICES
- 5. TYPES OF PHYSICALFILE SYSTEM PILE DIRECT FILE SEQUENCIAL FILE INDEXED FILE
- 6. THE PILE • Datas are collected in the order they arrive. • Records may have different fields. • Record access is by exhaustible search. • Purpose is to accumulate the mass of data and save it. • Least complicated form of file organization
- 7. SEQUENCIAL FILE SYSTEM • Records are stored and retrieved serially one after the other. • The files are searched from its begging until the requested record is found. • If the record not matched on search then record not found is sent to the user. • File name and length are attributes of the file.
- 8. INDEXED FILE SYSTEM •Exhaustive index contain one entry for every record in the main file • Partial index contain entries to record where the field of interest exists • Records are accessed only through their indexes • Variable length record can be employed.
- 9. Thanks for your presence and patience