Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
Cylinders is synonymous with
|
Tracks
|
|
|
Cylinder Capactiy
|
Block Size * Disks * Disk Sides * Blocks per track
|
|
|
Transfer Rate
|
Track Size / Rotations per milisecond
|
|
|
Block Transfer Time
|
Block Size in bytes/ Transfer Rate
|
|
|
Average Delay
|
Time for revolution in miliseconds / 2
|
|
|
Bulk Trnsfer Rate
|
Transfer Rate * ((block size) / (block size + gap size))
|
|
|
Average time to locate and transfer
|
Given + Rotatinoal Delay + block transfer time
|
|
|
Random # of transfer
|
# * Average time to locate
|
|
|
Consecutive # of transfer
|
Given + Rotational Delay + # * block transfer time
|
|
|
bfr
|
Block Size / Record Size
|
|
|
linear read double buffer
|
Given + Rot. Delay + (fileblock /2) * (512 / btr))
|
|
|
Binary Search Time
|
(log(2) Record Blocks) * (given + rot. delay + btt))
|
|
|
Trigger Structure
|
Create Trigger *Name*
{After / Before/ Instead of} {Update/Insert/Delete} of *Column* On *Table Name* [For Each Row] When (...) Code to do |
|
|
Double Buffering Transfer
|
Seek Time + Avg Rot. Delay + # * block transfer time in msecs
|
