How to implement a composite unique constraint in a data model
Currently, in the data model, a unique constraint can only be set for a single field. We can utilize the cloud database's own capabilities to set a composite unique constraint for multiple fields.
To learn about cloud database, you can refer to this document: cloud database
The following examples illustrate how to configure:
The member information table records details of registered members such as name, phone, and region. A unique constraint must be enforced on name+phone.
In the model, set the uniqueness constraint for name and phone to "No". Details are shown in the figure below.
In "Basic Information", locate the corresponding collection name.
Then go to the CloudBase-database and locate the corresponding collection.
Navigate to the collection and create a unique index on name + phone.
After completion, you can verify in the data model. When attempting to add data that violates the unique constraint on name+phone, an error will be returned.
Similar Issues
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