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WorksheetsIT R050 - 3.2.1 Data types
Total questions: 35
Worksheet time: 24mins
Alphanumeric data type:
Letters only
Numbers only
Both letters and numbers
Images
Boolean values are:
One of 2 options
Words only
Whole numbers
Time values
Date data type records:
Words
Whole numbers
Days, Months, Years
Letters and numbers
Numeric data type:
Symbols
Letters
Numbers used in calculations
Numbers not used in calculations
Currency data type:
Money
Names
Percentages
Whole numbers
Numbers with fractional parts:
Percentages
Whole numbers
Decimal values
Letters and numbers
Whole numbers:
Integers
Real numbers
Percentages
Dates
Percentages are shown as:
Words
%
Prices
Letters
Can include decimal or whole values:
Integer
Real number
Date
Text
Text data type holds:
Words or sentences
Numbers
Currency
On/Off responses
£24.50 should use:
Currency
Integer
Boolean
Percentage
Number of students in a class:
Integer
Real number
Boolean
Text
02/09/2009:
Date
Integer
Boolean
Real number
'JS45TR': a) Text b) Alphanumeric c) Boolean d) Real number Answer: b) Alphanumeric
Text
Alphanumeric
Boolean
Real number
Answering 'Yes' or 'No' on a form?:
Boolean
Text
Integer
Currency
'84%' in a report:
Percentage
Real number
Temperature reading (17.5):
Real number
Integer
Boolean
Text
A name field like 'Oliver Johnson':
Text
Integer
Boolean
Date
Bank balance of £2,365.75:
Currency
Integer
Percentage
Real number
Discount shown as '25%':
Percentage
Currency
Integer
Alphanumeric
Vehicle registration like 'AE19KWM':
Real numbers
Alphanumeric
Integer
Percentage
Why are prices not stored as text?
To allow for calculations
To save space
Text cannot include numbers
Text fields are harder to use
Why store daily temperatures as a real numbers?
Can include decimal points
They are large numbers
They are percentages
Easier to display
Stock levels for a shop use integers because:
Items can only be whole numbers
They are always large
Letters are not allowed
They are easier to spell
A checkbox asking 'Subscribe to updates?':
Boolean
Text
Currency
Real number
What is a data type?
A way of storing hardware
A describes the kind of data stored
The size of a file
A program used for numbers
Why do we use different data types?
To make things more complicated
To help computers process data correctly
Because they look nice
Because Microsoft said so
Match the data types:
Y
Off
True
AAA4ZA
RES34
Whole number:
(a)
Mixture of letters and numbers:
(a)
Can be whole or decimal number:
(a)
Can be 1 of 2 options
(a)
Words and sentences
(a)
Money data
(a)
Number with fractional parts
(a)
