Question

Data Modelling

Asked by: datahelp

I never did a data modelling but have a task which requires to design a data model for the small application, what would be the better way to start ? It will be created in access

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Asked On
2009-10-16 at 13:53:04ID24819410
Topics

Microsoft Access Database

,

Access Architecture/Design

Participating Experts
3
Points
500
Comments
3

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Answers

 

by: DatabaseMXPosted on 2009-10-16 at 13:59:26ID: 25593288

Start by creating tables you think you need ... injunction with creating a Relational model using the Relationships window in Access (graphic view of tables and relationships).

See these links:

http://www.fmsinc.com/tpapers/genaccess/databasenorm.html
http://www.databasedev.co.uk/primary_foreign_keys.html
http://support.microsoft.com/?kbid=209534
http://support.microsoft.com/?kbid=304467

http://www.allenbrowne.com/tips.html

mx      

 

by: TorrwinPosted on 2009-10-16 at 14:01:36ID: 25593320

The first step is to identify all of your entities.  These are the objects which you want to store data about, and can be uniquely identified.  These entities are the basis for your tables in Access, and will be related to each other later on.  

For example, if you sold widget parts to your customers,  "Customer", "Part", and "Order" would be entities.  The tables would look something like so:

CUSTOMER
Customer_ID
First Name
Last Name
Address

PART
Part_ID
Name
Cost

ORDER
Customer_ID
Part_ID
Date

 

by: puppydogbuddyPosted on 2009-10-16 at 21:11:46ID: 25594734

see these links:

introdction to Data Modeling (for Access)
http://www.databasedev.co.uk/data-modeling-database.html

Sample Access Relational Data Models (downloads from different applications)
http://www.databasedev.co.uk/data_models.html

20120131-EE-VQP-002

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