2. Data Types
• Figures & Facts = alphanumeric characters
• Alphanumeric characters can be grouped
into 5 data types:
– Boolean
– Real
– Integer
– Text/String
– Date/Time
3. Boolean
• This data type holds one of two values, for
example:
– yes/no
– true/false
– 0 / 1
– Male/Female
• A boolean data type is used to answer questions
where there are exactly two options, three options
would mean it was no longer boolean data.
• Example:
– Has the heating been turned on? Yes / No
– Are you male? Yes / No
4. Real
• This data types contains NUMBERS which
will have DECIMAL places
• Example:
– Room length in metres 45.76m wide
– Prices of Goods £1.75
– Height of People 1.82m
5. Integer
• This data types contains WHOLE NUMBERS
with NO decimal place.
• Example:
– TV Channel 1
– C0ding Responses 1 – 4
– House Prices £275000
6. Text/String
• This is alphanumeric, contains numbers, text
and symbols
• Example:
– Post Code RM8 1JT
– Telephone Number 0208 270 4242
– Address 10 Downing Street
7. Date/Time
• This contains numbers and letters, which
depend on format used, could be used to
display date, time
• Example:
Date 25th October 2009
or 25/10/09
Time 12.45.20