CG3 Definitions

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  • Created by: Beth Dion
  • Created on: 11-06-14 23:22
What is a Generation File?
Involves storage of several of the most recent versions of a master file. They are useful if one version is corrupted.
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What is Data Collision?
It occurs when two sets of data are detected on a network simultaneously. Once detected, the computer waits for a short amount of time and then resends.
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What is Multiplexing?
Where several independent data sources are combined to be sent along a single route to a single destination.
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What is rounding?
Rounding is when a number is approximated to the nearest whole number.
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What is Truncating?
Truncating is when the number is approximated to the whole, nearest to 0.
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What is a recursive algorithm?
It is one which calls itself and it must also have a terminating condition. It is often used when dealing with Random Access Files.
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What is a Foreign Key?
It is a primary key from one table which is included in another. It is used to form links between tables.
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what is BNF?
BNF is used to describe syntax/grammar rules of a computer language.
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What is a CASE tool?
It is a computer program used to design and develop a computer application. It assists with design and provides a data dictionary.
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What is a Break Point?
A break point allows the programmer to halt execution in order to ascertain the value of variables at that point.
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What is a Variable Watch?
It lists the values of a variable at a specific point in execution.
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What is a Store Dump?
It lists the entire contents of memory at a certain point
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What is a Data Structure?
It is a group if related data items
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What are Error Diagnostics?
These are provision messages relating to errors in the program
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Other cards in this set

Card 2

Front

What is Data Collision?

Back

It occurs when two sets of data are detected on a network simultaneously. Once detected, the computer waits for a short amount of time and then resends.

Card 3

Front

What is Multiplexing?

Back

Preview of the front of card 3

Card 4

Front

What is rounding?

Back

Preview of the front of card 4

Card 5

Front

What is Truncating?

Back

Preview of the front of card 5
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