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