In this topic, you will learn about, different file access methods with an example.
In file, the organization files can be accessed by using two methods:
- Sequential access.
- Random access.
Sequential access: In this file organization file access sequentially where sequence depends on memory block or file contents. It access file contents letter by letter where C & C++ programming language by default file access sequentially. It’s an example of a sequential file organization.
Random access: In DBMS file can be accessed randomly and allow to creation of a file on random memory locations and it also offers a facility to access file contents randomly. Random access file organizations use buffer memory for a transaction.
File access component:
File access method like sequential access and random access depends on the various component:-
- Memory: Due to memory organization file access sequentially or randomly where if file creates on a hard disk then access sequentially but store randomly with the help of master file organization but file store on primary memory create sequentially and access randomly like RAM.
- Network or Operating system: network like LAN access file randomly with the help of FTP(file transfer protocol). File access also depends on OS like Unix, Linux access sequentially but windows access randomly.
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