One to One

1
One to One
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1 2 3 4 5
5 6 7 8 9
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The Rule is ADD 4
2
Mall Movies Restaurant Library Science Center
Aaron Billy Chad Davena Eric
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Went this weekend to the
There are MANY arrows from each person and each
place is related to MANY People. It is a MANY to
MANY relation.
3
Person Has A Mass of
Kg
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Bilal Peter Faith James Charles Alisha
62 64 66
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In this case each person has only one mass, yet
several people have the same Mass. This is a
MANY to ONE relationship
4
Is the length of
cm
object
Pen Pencil Ruler Notebook Stick
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14 30
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Here one amount is the length of many
objects. This is a ONE to MANY relationship
5
FUNCTIONS

• Many to One Relationship
• One to One Relationship

6
Which Are Functions?
(a) and (c)
7
Which Are Functions?
(a) and (c)