ICT revisions, types of data

the types of data most likely to come up in the exam

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  • Created by: Hannah
  • Created on: 10-06-11 13:14

REAL NUMBERS

these are a field that contains a decimal fraction

£27.97 or 46.820

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INTERGERS

a field that contains only whole numbers

2, 14, 1957348

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BOOLEAN

you can only have one of two states, if searching in database fro red cars then it will be true value or false value

true, false       yes no         AND OR

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ALPHANUMERIC

a field that contains both numbers and letters

HSJ863KIS0

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