1. Data Types

2. Learning Outcomes: By the end of this topic you should be able to:
describe different data types
give examples of suitable uses for each data type

3. Data Types
Boolean
one of only two possible values,
True/False, Yes/No

4. Data Types Integer a whole number (no decimal places)
number of bedrooms/children ….
large amounts of money
house price, car price
NOT telephone number (text/string)

5. Data Types String used for text
e.g. surname, telephone number, postcode
aka: text, alphanumeric

6. Data Types Real number with decimal fraction e.g. 5.4, 3.142, 1.0
measurements in a house (2.4m)
item price in shop (£4.99)
height of people (1.80m)

7. Data Types
Date/time
date of birth, date of examination, ….
25/12/2008