What is junction object in Salesforce with example?

Asked By: Amel Lamberti | Last Updated: 13th April, 2020
Category: technology and computing databases
4.6/5 (83 Views . 18 Votes)
In Salesforce, a Junction Object is a custom object with two master-detail relationships to two different record types. It is used to represent a many-to-many relationship in which several junction objects can link one instance of a record to many children, and each child can equally be linked to many parents.

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Furthermore, how do you identify a junction object in Salesforce?

Since Junction object can have two master-detail relationShips you can easily find out the junction object. Go to create > objects and check which object have 2 master objects.

Likewise, can we delete junction object in Salesforce? Junction object records are deleted when either associated master record is deleted and placed in the Recycle Bin. If both associated master records are deleted, the junction object record is deleted permanently and can't be restored.

Beside this, what is a junction object and how can it be created in Salesforce?

Junction objects are custom Salesforce objects that can relate and link two objects. The junction object does this by establishing a master-detail relationship.

How do you connect objects in Salesforce?

In the custom field wizard:

  1. Choose Master-Detail Relationship as the field type.
  2. Select one of the objects to relate to your junction object. For example, select Case .
  3. Select a Sharing Setting option.
  4. For the Related List Label that will display on the page layout of the master object, do not accept the default.

39 Related Question Answers Found

What is a junction object?

In Salesforce, a Junction Object is a custom object with two master-detail relationships to two different record types. It is used to represent a many-to-many relationship in which several junction objects can link one instance of a record to many children, and each child can equally be linked to many parents.

How do you create a junction object?

To create the junction object:
  1. Click Your Name | Setup | Create | Objects.
  2. Click New Custom Object.
  3. In the custom object wizard, consider these tips specifically for junction objects: Name the object with a label that indicates its purpose, such as BugCaseAssociation .

How many Lookup relationships are there in Salesforce?

Each object is allowed to have one or two masters, or up to 8 details. You can have a Total of 40 Relationship fields with a Maximum of 2 Master Detail Relationships. So you can have all 40 as Lookup Relationship fields, 38 Lookup and 2 MD 39 Lookup and 1 MD relationship fields on an object.

What is lookup relationship in Salesforce?

Salesforce - Lookup Relationship. Advertisements. A Lookup relationship involves finding value of a field based on the value in another field in another object. It is mostly used in the case of commonly shared data between two objects.

What is self relationship in Salesforce?


Self-relationship: When an object has a lookup with itself, it is a self-relationship. A self relationship creates a tree diagram of the objects. For example, the account has a lookup on himself, called Parent Account.

What happens to a junction object record when either associated master record is deleted?

Junction object records are deleted when either associated master record is deleted and placed in the Recycle Bin. If both associated master records are deleted, the junction object record is deleted permanently and cant be restored.

Can we create junction object using lookup?

2 Answers. Yes you can. A downside is that unlike when you use master-detail relationships, the junction object will not be automatically deleted when one or both of the objects it is relating are deleted. You can add your own logic to deal with that though.

What is the difference between 15 and 18 digit Salesforce Com ID's?

15 character ID is a case-sensitive version which is referenced in the Salesforce user interface. You can use this ID while performing data operations through the user interface. 18 character ID is the case-insensitive version which is referenced through the APIs.

What is a bucket field?

Bucket field in Salesforce Reports is an incredible powerful functionality used to quickly categorize values for a field in a report without the need to have a custom formula field at the object level. Salesforce Reports are used to generated data and display the data in the form of Rows and Columns with rule criteria.

What is roll up summary in Salesforce?


A roll-up summary field calculates values from related records, such as those in a related list. You can create a roll-up summary field to display a value in a master record based on the values of fields in a detail record.

What is sharing rules in Salesforce?

Sharing Rules. Use sharing rules to extend sharing access to users in public groups, roles, or territories. Sharing rules give particular users greater access by making automatic exceptions to your org-wide sharing settings.

What is external lookup in Salesforce?

Add an External Lookup Field
An external lookup relationship is another new field type introduced with Salesforce Connect. This type links an object to an external object. You link Order Details to Orders based on the Order ID field in both objects, resulting in a new related list on the Orders page.

What is record type in Salesforce?

Record Types. Record types allow you to associate different business processes and subset of pick list value to different users based on their user profile. They are used to drive which page layouts users see when viewing records, based on their user profile.

How many objects can be imported using dataloader?

Data Loader—this is a client application that can import up to five million records at a time, of any data type, either from files or a database connection. It can be operated either through the user interface or the command line.

What is parent/child relationship in Salesforce?


Master-detail relationship is like parent-child relationship where, master represents a parent and detail represents a child in which master object controls some behaviors of the detail object. Like whenever a Master object record is deleted then the detail object related to it also gets deleted.

What is Reparenting in Salesforce?

Reparenting means when we change reference of parent record from child record. in look-up it is allowed to change parent reference. But y default, records can't be reparented in master-detail relationships.

How many types of relationships are there in Salesforce?

Salesforce provides the following types of relationships that can be established among objects:
  • Master-detail relationship.
  • Lookup relationship.
  • Self-relationship.
  • External lookup relationship.
  • Indirect lookup relationship.
  • Many-to-many relationship (junction object)
  • Hierarchical relationship.