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Suppose you have a list of people’s names, and a list of social security numbers.Each person has only one social security number, and each social security number is linked to one person.You can think of the junction table as a place to store attributes of the relationships between two lists of entities.If that sounds abstract, let’s look at a specific example: Suppose you have a list of students and a list of classes.
Using linked record fields, you could then set it up so that every record in the works table is linked to one museum record, and every record in the museums table is linked to one or more records in the works table.
You could track this many-to-many relationship on a single table with a self-linking record field.
Here are some other examples of many-to-many relationships: Often, representing a many-to-many relationship in Airtable is as easy as linking two tables together.
This article defines the different types of relationships between lists of entities and provides examples so you can learn to identify them yourself.
It also explains how to represent many-to-many relationships using a technique called "junction tables." Relationship types One-to-one One-to-many Many-to-many Many-to-many relationships and junction tables Example 1: Students and classes Example 2: Applicants and interviewers Example 3: Clients, client orders, products, and manufacturers Calculated fields and junction tables The simplest kind of relationship is a one-to-one relationship.