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Many-to-Many
By Richard Rost   Richard Rost on LinkedIn Email Richard Rost   3 years 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 view Extended Cut videos, when available. 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 register on my YouTube Find User page 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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Keywords

#msaccess, Microsoft Access, teacher, training, certifications, tracking, many-to-many, many to many, courses, junction table, class enrollments, books to authors, students to classes, employees to certifications, products to manufacturers, songs to artists

 

Comments for Many-to-Many
 
Age Subject From
4 monthsControl Box WizardIrini Psarommati
7 monthsmultiple M2M on one formSusan Williams
8 monthsminimal manytomany subformMichael Olgren
2 yearsJunction Many to ManyDebra Triolo
2 yearsMany to Many subformJacob Woolsey
2 yearsMany to Many to ManyMatthew McHenry
3 yearsRe Continuous form toolScott Axton

 

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Copyright 2024 by Computer Learning Zone, Amicron, and Richard Rost. All Rights Reserved. Current Time: 3/28/2024 3:56:48 AM. PLT: 0s
Keywords: TechHelp Access m2m teacher, training, certifications, tracking, many-to-many, many to many, courses, junction table, class enrollments, books to authors, students to classes, employees to certifications, products to manufacturers, songs to artists  PermaLink  Many-to-Many in Microsoft Access