individual blocks of data have unique address (records), access is by jumping to vicinity plus sequential search, uses shared read/write mechanism, depends on location and previous location. (ex. dvd).
individual blocks of data have unique address (records), access is by jumping to vicinity plus sequential search, uses shared read/write mechanism, depends on location and previous location. (ex. dvd).
access to the records is made directly to the record using its unique address based on the physical location.