The data model serves as a guide for creating the relationships between primary and foreign keys in your database. In Access, the relationships screen allows for drag-and-drop creation of the linkages.
- [Instructor] Now that all of our tables are created,…we need to establish the relationships between them.…To do that inside of Access,…we'll come up to the Database Tools tab…and press the Relationships button.…That'll bring up the Show Table window.…Now choose the Customers table,…and then Shift + Click Products to select all of them,…and then press Add…to add them in here to the map in the back.…Let's go ahead and press the Close button,…and we'll see them there.…Now, the layout here inside of the Relationships screen…should look a lot like our data model.…We can move these windows around…that represent each of our tables,…and we can see the fields down below.…If we need to, we can expand the window open…in order to see all the different fields.…
I find it easier to make sure that the layout here…inside the Relationships window matches the data model.…So let's go ahead and move these into position…so that it matches the model that I showed earlier.…I'll move Invoices there.…I'll take Lineitems and just move it down below…
Adam Wilbert covers the basics of relational database design, regardless of whether you use Access, FileMaker, Open Office, or SQL Server. Learn how to prevent data anomalies, gather requirements to plan your design, and develop a conceptual data model—translating your ideas into components like tables, relationships, queries, and views. Plus, learn about logical design considerations that can help you construct a database that is easy to maintain.
- Identify the three rules of relations.
- Summarize the four stages of developing a relational database.
- Describe a strategy one might use to ensure a database remains flexible in terms of the questions a user can ask.
- Explain how to avoid scope creep.
- Recall the characteristics of a Lookup Table.
- Recognize situations in which denormalization would be beneficial.
- Understand the types of relationships modeled by junction tables.
- Define referential integrity.
Skill Level Beginner
1. Relational Database Basics
Relational structures3m 46s
2. Preventing Data Anomalies
3. Gathering Requirements
4. Developing the Conceptual Data Model
5. Normalizing Your Data
6. Logical Design Considerations
7. Developing the Physical Database
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