1. Starter You’ve witnessed a crime.
Someone has committed the following crimes so far:
Stealing Miss Virdi’s favourite pen
Ruining Mr Tracey’s personal crazy golf course
Eating Mr Morris’ DJ headphones
Replacing Mr Johal’s iPhone with an old Nokia 5110

2. The police want your witness statement!
It gets worse…
His final act, which you witnessed, was allegedly
watering the floor in B block corridor so
Mr Davidson would fall over…OMG!
The police want your witness statement!

3. Draw and describe the criminal
Your job is to draw and annotate a picture to provide the best description of the criminal as you can as you’re the only one who saw him. We will come back to this later…

4. Lesson Objectives By the end of this lesson you will be able to:
Describe the terms file (table), record, field and key fields
Describe flat file and relational databases

5. Recap… What is data? Data is raw facts and figures.
Data on it’s own has no meaning.
Some examples:
B2.2
d2d4
a3z
wig

6. We have an important equation for you to learn
On it’s own means nothing – it’s just a piece of data.
You need to add format/structure and context to data for it to make sense – this gives the data Meaning.
For example:
= data
11/09/13 = data with format/structure which now tells us this is a date
11/09/13 = this is the date of the ICT exam next year
If we know what data means we have Information.
Data + Meaning = Information

7. Further Examples…
Data
Context 12
Pounds (£) 47
Age
B2.2
Room Number

8. Go back to your police description…
The examples on the previous slide show that if you know the context that applies to a piece of data, then you know what the data means.
The pieces of information you wrote down earlier in the lesson gives us information about the culprit.
For example, height – 5.5ft, estimated age – 28, hair colour – blonde etc.
These pieces of information are called FIELDS.

9. What format are we storing this information in?
Let’s build a record…
If we collected all these fields together about a
person, we would have a pretty good RECORD of
what someone looks like.
Height
Est Age
Hair Colour
Eye Colour
Gender
What format are we storing this information in?

10. The Culprit…
Write out the FIELDS that would build the culprit's RECORD.
Next to each one write the Data Type you would use and the information you provided.
For example:
Field Data Type Information
Est Age Integer

11. Schools…
School stores a lot of information about each of its students.
What information do you think they keep about you…
Parents/Carers Names
Allergies
Name
Address
Targets and WAGs
Phone Number
Date of Birth
Doctor’s Name

12. Complete the sentences…
The information school stores about me is kept in a __________ as part of a database Each piece of information they keep about me is stored in a __________ Two examples of fields used by school to store my information are _________ and __________

13. Fields… Field Field Field Student number Surname First name D.O.B.
Address
Phone number
Illnesses
Allergies
Doctor
1042
Jones
Emma
05/04/95
123 High Street
Nuts
Dr. Brown
1043
Smith
Louise
12/08/95
45 Low Road
Diabetes
Dr. Green
1044
White
Simon
26/06/95
67 Middle Lane
Wasp stings
Dr. Yellow

14. Records… Record Record Student number Surname First name D.O.B.
Address
Phone number
Illnesses
Allergies
Doctor
1042
Jones
Emma
05/04/95
123 High Street
Nuts
Dr. Brown
1043
Smith
Louise
12/08/95
45 Low Road
Diabetes
Dr. Green
1044
White
Simon
26/06/95
67 Middle Lane
Wasp stings
Dr. Yellow
Record

15. Files (Tables)…
All student records are stored together as a file (also known as a table).
Student number
Surname
First name
D.O.B.
Address
Phone number
Illnesses
Allergies
Doctor
1042
Jones
Emma
05/04/95
123 High Street
Nuts
Dr. Brown
1043
Smith
Louise
12/08/95
45 Low Road
Diabetes
Dr. Green
1044
White
Simon
26/06/95
67 Middle Lane
Wasp stings
Dr. Yellow
File

16. Key Terms… Field – a single item of data
Record – all data relating to one thing or person
Student number
Surname
First name
D.O.B.
Address
Phone number
Illnesses
Allergies
Doctor
1042
Jones
Emma
05/04/95
123 High Street
Nuts
Dr. Brown
1043
Smith
Louise
12/08/95
45 Low Road
Diabetes
Dr. Green
1044
White
Simon
26/06/95
67 Middle Lane
Wasp stings
Dr. Yellow
File – collection of related records

17. Reading Time…
Get a textbook
Read pages 46 and 47 of the textbook…

18. Answer the following questions…
Remember to use full sentences when answering questions.
What is a KEY FIELD?
Give an example of a key field.
Why are these needed?
What is a FLAT FILE database?
List two advantages of flat file databases.
List two disadvantages of flat file databases.
What is a RELATIONAL database?
List two advantages of relational databases.
List two disadvantages of relational databases.
Answer question 1 at the bottom of page 48.

19. Exam Questions