Question

In: Computer Science

Using the descriptions given in the figure, convert the ERD shown in Figure P6.2 into a...

Using the descriptions given in the figure, convert the ERD shown in Figure P6.2 into a dependancy diagram that is in at least 3NF.

Expert Solution

Dependency diagram for given ERD:

PRESENTATION:

REGISTRATION:

ATTENDEE:

Here,
REGISTRATION and ATTENDEE are 3NF
PRESENTATION is not 3NF

So, remove the attributes which are depending on a non-key attribute from the given relation to convert the PRESENTATION into 3NF.

Hence, the database can be divided into four relations as below.

PRESENTATION:

REGISTRATION:

ATTENDEE:

AUTHOR:

venereology answered 2 years ago

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