IGCSE – Information Communication Technology
Test Yourself – Section 5
IGCSE Section 5: Data Types – Test Yourself
The following notes summarise the whole of section 5. The notes are missing
some key words and it is your job to fill them in. Select the correct word from the
lists provided. Words must only be used once.
1.
There are two main types of data analogue and Select Word.
2.
Numeric data with decimals are known as Select Word numbers.
3.
Numeric data without decimals are known as Select Word numbers.
4.
Letters and numbers together are called Select Word data.
5.
If I wanted to store the value ’12-Dec-2012’ I would use the Select Word data type.
6.
Logical or Select Word data can only have true or false values.
7.
Data that uses money symbols are known as Select Word values.
8.
Number data can handle both positive and Select Word values.
9.
< means Select Word. > means Select Word . <= means Select Word. >= means Select Word .
= means Select Word.
10. A Select Word is a piece of data in a database that is unique to a particular record.
11. Databases are used to Select Word and Select Word data.
12. A single row in a database table containing all the data about a single object or person is called
a Select Word.
13. Individual pieces of data are stored in Select Word .
14. The word Select Word is used to describe databases that consist of only one table.
15. A database that holds its data in two or more tables is known as a Select Word database.
Mark Nicholls – ICT lounge
Page | 1
IGCSE – Information Communication Technology
Test Yourself – Section 5
16. Relational databases have Select Word called relationships between the tables.
17. A Select Word is the name given to any fields that appear in two or more tables.
18. Flat-file databases can suffer from Select Word where lots of data in the tables are repeated.
19. Select Word are assigned to key fields and are important when forming relationships between
two or more tables.
20. Fields in one table that are being used as key fields in another are known as Select Word.
21. If data is sorted A – Z, it can be described as being in Select Word order.
22. Select Word data uses values that continuously change very Select Word.
23. Digital data uses values that jump from one value to the next in a Select Word sequence.
24. Devices that use digital data are known as Select Word.
25. Examples of analogue devices include Select Word, Select Word and Select Word.
26. Examples of digital devices include Select Word, computers and mobile phones.
27. An Select Word from a sensor will need to be converted into a digital signal before it can be
processed by a computer.
28. A Select Word from an MP3 player will need to be converted into an analogue signal before it
can be output as sound by a set of headphones.
29. Changing a digital signal to analogue is performed by a Select Word.
30. Changing an analogue signal to digital is performed by a Select Word.
ANSWERS ON NEXT PAGE
Mark Nicholls – ICT lounge
Page | 2
IGCSE – Information Communication Technology
Test Yourself – Section 5
IGCSE Section 5: Data Types – Test Yourself
The answers!
Check your answers against those below. Any errors you may have made must be
corrected and memorised!!!
Mark Nicholls – ICT lounge
Page | 3
IGCSE – Information Communication Technology
Mark Nicholls – ICT lounge
Test Yourself – Section 5
Page | 4