0 votes
97 views
in Computational Tools by (user.guest)

1 Answer

0 votes
by (user.guest)
 
Best answer

Sequential organization: This requires that to retrieve a specific record, all proceeding records are scanned and passed over. The advantage of a sequential organization is rapid access to the next record which constitutes both the physical as well as the logical record in the file but its disadvantage is that it is difficult to update. Typical examples of sequentially organized files can occur on serial etc. However, file on direct access storage media can be efficiently organized sequentially too.

Random organization: This ignores the physical sequence of the records stored and records are accessed on the basis of their physical location (not in any sequence anyway) on the storage medium. the advantage of a random organization is that any record in a collection can be reached without scanning all preceding records. This form of organization applies to most files on direct access storage media such as magnetic disks and drums. Records are identified and located by a hashing function technique or by specifying the relative record number.

Indexed organization: This requires an index to be created. This index consists of a collection of entries; each entry corresponds to data record and contains the value of a key attribute for that record and a pointer which allows immediate access to that record. The index may be part of the file or may be separate file.

Indexed sequential file organization: This is similar to a sequential file organization in that rapid sequential processing is possible, even though the file must be resident on a direct access storage medium. Similarly, non-sequential processing is very possible for an indexed sequential file. In ordinary indexed organization, only non-sequential processing is usually done on the data records.


Related questions

+1 vote
1 answer 1.1k views
+1 vote
1 answer 315 views
+1 vote
1 answer 349 views
asked Sep 17, 2021 in Computational Tools by anonymous
+1 vote
1 answer 274 views
asked Sep 16, 2021 in Computer Networks by anonymous
+1 vote
1 answer 697 views
0 votes
1 answer 70 views
0 votes
1 answer 892 views
+1 vote
1 answer 4.5k views
0 votes
1 answer 662 views
+1 vote
1 answer 106 views
+1 vote
1 answer 297 views
+1 vote
1 answer 272 views
+1 vote
1 answer 241 views
+1 vote
1 answer 622 views
+2 votes
1 answer 557 views
+1 vote
1 answer 1.2k views
+2 votes
1 answer 1.4k views
+2 votes
1 answer 810 views
0 votes
1 answer 181 views
asked Oct 28, 2021 in Computational Tools by (user.guest)
+1 vote
1 answer 303 views
+1 vote
1 answer 4.5k views
+1 vote
1 answer 309 views
+1 vote
1 answer 1.2k views
0 votes
1 answer 570 views
asked Sep 6, 2021 in Computational Tools by (user.guest)
+1 vote
1 answer 623 views
+1 vote
1 answer 432 views
0 votes
1 answer 2.5k views
asked Oct 11, 2020 in Computer Networks by (user.guest)
+1 vote
1 answer 143 views
+1 vote
1 answer 823 views
+1 vote
1 answer 737 views
+1 vote
1 answer 144 views
+1 vote
1 answer 1.9k views
Welcome to CPENTalk.com
Solution-oriented students of computer engineering on one platform to get you that

ONE SOLUTION

...