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Home > TechHelp > Directory > Access > Many to Many < IIF | Flashing Text >
 
Many-to-Many
By Richard Rost   Richard Rost on Twitter Richard Rost on LinkedIn Email Richard Rost   7 months ago

Many-to-Many Relationships in Microsoft Access


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Learn how to create a many-to-many relationship in Microsoft Access. This is useful to track relationships between multiple records on BOTH sides of the relationships. For example: students to classes. Each student can be enrolled in multiple classes, and each class can contain multiple students. I'll show you how to set up a Junction Table to track these relationships.

Lucas in Anchorage, Alaska (a Platinum Member) asks: "I need to track employee training, when they took the certification test, and when their certification expires. I need a list of which employees have certifications expiring soon so that I can send them for retesting. I'm having trouble matching up the employee to the certification. Can you help?"

Members

I'll show you how to build the forms necessary to make working with these relationships easy. We'll go both ways: we'll build a customer form that will show all of their courses in a subform, and then a course subform that will show all of the enrolled customers in the subform. We'll make a double-click event to update the course date, and then an After Update event to set the expiration date equal to a year in the future. Then we'll make a query showing all of the customers who have certifications that are expired or are expiring in the next 30 days.

Silver Members and up get access to an Extended Cut of this video. Gold Members can download the database template from class plus get access to the Code Vault. If you signed up on YouTube you have to contact me so I can set up your account here on my web site. If you're not a member, Join Today!

Links

Relationships: https://599cd.com/Relationship
After Update: https://599cd.com/AfterUpdate
DLookup: https://599cd.com/DLookup
Access Expert 7: https://599cd.com/ACX7
Relationship Seminar: https://599cd.com/RelationshipSeminar
AccessDev.NET: http://AccessDev.NET
Theory: https://en.wikipedia.org/wiki/Many-to-many_(data_model)

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Re Continuous form tool Upload Images   Link 
Scott Axton 
7 months ago
Ha Ha!

There is an old saying, "If the only tool you have is a hammer, you will start treating all your problems like a nail.

Sometimes you need a disruptor, while other times you need a phaser
Richard Rost
7 months ago
Indeed!
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