Sequential access file organization
In computer science, sequential access means that a group of elements (such as data in a memory array or a disk file or on magnetic tape data storage) is accessed in a predetermined, ordered sequence. Sequential access is sometimes the only way of accessing the data, for example if it is on a tape.
Direct File Organization
Hash/Direct File Organization. In this method of file organization, hash function is used to calculate the address of the block to store the records. … Hence each record is stored randomly irrespective of the order they come. Hence this method is also known asDirect or Random file organization.
