COMPUTER SCIENCE AND ENGINEERING
COMPUTER ORGANIZATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Indexed Sequential
|
|
|
Serial
|
|
|
Sequential
|
|
|
Direct Access
|
Detailed explanation-1: -Indexed-sequential file organization method For example, on a magnetic drum, records are stored sequential on the tracks. However, each record is assigned an index that can be used to access it directly.
Detailed explanation-2: -The term “file organization” refers to the way in which data is stored in a file and, consequently, the method(s) by which it can be accessed. This COBOL system supports three file organizations: sequential, relative and indexed.
Detailed explanation-3: -A sequential file contains records organized by the order in which they were entered. The order of the records is fixed. Records in sequential files can be read or written only sequentially. After you place a record into a sequential file, you cannot shorten, lengthen, or delete the record.