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Can we make lookup field unique?
A unique field lookup requires one lookup operation on the source and the target. If you cannot create an external ID field for an object, you can select a unique field or an idlookup field for the object from the Target tab when you perform an upsert operation.
What is polymorphic field in Salesforce?
Salesforce makes use of polymorphic relationship fields for native lookup fields that can reference multiple objects. The most common fields that use polymorphic relationships are Owner fields and Activity WhatId/WhoId fields.
How do I create a custom unique field in Salesforce?
1. create a text field (dont put it on the page layout) and set it as unique. 2. Create a workflow on create/edit of the table (edit of the relevant fields if you want to be efficient) that concatenates the two fields you want into the created text field AND to the record name.
What is polymorphic lookup field?
A polymorphic field is one where the related object might be one of several different types of objects. For example, the Who relationship field of a Task can be a Contact or a Lead.
How to create multiple lookup fields in Excel?
In order to link the records to the other object, you have to create a multiple lookup fields. Supplier 1, Supplier 2, Supplier 3, etc. This makes it impossible to view the Raw Material related list from the Supplier Detail Page.
When to query a lookup or multivalued field?
When you query a Lookup or multivalued field, there are unique considerations. For more information, see Create or delete a multivalued field and Create or delete a lookup field. The display value of a Lookup field is automatically shown in query datasheet view by default.
How is a join created in a lookup field?
When you create a Lookup field, a join is created between the Bound value and the Display value. Although you cannot directly use the Display value in a query, you can use the corresponding value from the other data source.
How is a multivalued field used in access?
In Access, you can create a multivalued field that holds multiple values (up to 100). You can also create a Lookup field that displays a user friendly value bound to a value in another data source. When you query a Lookup or multivalued field, there are unique considerations.