File access method

File Access Method in Operating System

1. File Access Method

2. Three types of File Access Method Sequential Access Random/Direct Access Indexed Access

3. Sequential Access This method is the simples of all method. Information in the file is processed in order, one record after the other Operations Read Next Write Next Revine

4. Direct Access Better than Sequential address In this method, we can read or write randomly without any order Operations Read n Write n Jump to record n

5. Indexed Access Indexed Sequential file overcome the disadvantage of the sequential file. These methods construct an index for the file. An index stores the location of records based on the field or fields that you choose to index