Database DesignDatabase DesignDatabase DesignDatabase Design

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What’s your problem?

• Sort out the basic idea for the Database…

e.g. : Your local Angling Club is looking to set up a Database to manage their Membership & Match information.

Identify the basic elements

• Hold the list of Members• Manage the renewal of

Memberships• Hold a list of their Venues• Hold the list of Annual Matches• Manage the booking of Matches

Be a bit more specific !

• Membership list…– Add new Members– Review &/or update Member details– Allocate new Membership IDs– Track & log the renewal of

Memberships

And more specific !!

• Add new Member…– Check existing Membership– Enter new Member details– Store details in the Members Table– Generate & Issue new Membership ID– Issue Membership Card

Do a diagram…

Add a New

Member

Store details in Members Table(ID, Name,

Address, Phone, Date joined, etc…)

Issue new Membershi

p ID

Name, Address, Phone, Date joined, etc…

Membership ID

Repeat, repeat, repeat…

• Repeat the process for each of the elements identified.

• Add more detail where necessary.

What Tables ??

• Identify the Tables you need…– tblMembers – For the Membership List– tblMatches – Lists Match details– tblVenues – Where we fish– tblBookings – Link Members to

Matches and their Venues

List you Fields…

• Fieldnames• Data Types• Key Fields• Formats

And Normalise…

• Split Fields into appropriate Tables• No duplication of Data!!• Don’t over-do-it!• Identify the Relationships…

Do a Diagram

tblMembers

MembershipID

DateJoined

Title

FirstName

LastName

Etc…

tblVenues

VenueID

Name

Location

Type

Etc…

tblMatches

MatchNo

VenueID

Date

Swims

Etc…

tblMatchBookings

BookingID

MembershipID

MatchNo

VenueID

Date

StartTime

Fee

Etc…

Check back with Specs

• Link Design to Specifications– Does it do what was intended?– Is the client happy?– Do the Specs need revising?– Could someone implement your Design?

• Move to Implementation…