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Activity › Forums › Salesforce® Discussions › What is a “Look-up Relationship” in Salesforce?

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  • shariq

    Member
    September 24, 2018 at 4:21 AM

    No parent is required.
    Relationship is optional.
    No impact on Security.
    Roll-Up summary fields cannot be available.

  • Parul

    Member
    September 28, 2018 at 9:31 PM

    Lookup Relationship (1:n)

    This type of relationship links two objects together, but has no effect on deletion or security. Unlike master-detail fields, lookup fields are not automatically required. When you define a lookup relationship, data from one object can appear as a custom related list on page layouts for the other object. See the Salesforce online help for details.

    Child row not automatically deleted when a parent row is deleted
    No inherited sharing.
    25 lookup relation relationships allowed per object.
    Lookup field on child not necessarily required.

    To create a many-to-many relationship, simply create a custom junction object with two master-detail relationship fields, each linking to the objects you want to relate. See the Salesforce online help for details. … Unlike master-detail fields, lookup fields are not automatically required.

  • Pooja

    Member
    January 27, 2020 at 12:20 PM

    A Lookup relationship consists of searching value of a field based upon the value in another field in another object. It is commonly used in the case of shared data between the two objects.

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