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..
Also asked, what is look up relationship in Salesforce?
Salesforce - Lookup Relationship. 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.
Secondly, what will happen if we delete the deleted junction object? 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.
In this regard, 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 a junction object and how can it be created?
Junction objects are custom Salesforce objects that can relate and link two objects. The junction object does this by establishing a master-detail relationship.
Related Question Answers
What is difference between master detail and lookup?
You can convert a master-detail relationship to a lookup relationship as long as no roll-up summary fields exist on the master object. You can convert a lookup relationship to a master-detail relationship, but only if the lookup field in all records contains a value.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.
What is lookup data type in Salesforce?
Salesforce objects often include lookup fields that allow you to associate two records together in a relationship. For example, a contact record includes an Account lookup field that associates the contact with its account. Lookup fields appear with the. button on record edit pages.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. The detail record must be related to the master through a master-detail relationship.What is a lookup field?
A lookup field is a read-only field that displays values at runtime based on search criteria you specify. In its simplest form, a lookup field is passed the name of an existing field to search on, a field value to search for, and a different field in a lookup dataset whose value it should display.What is SOQL used for?
Salesforce Object Query Language (SOQL) Use the Salesforce Object Query Language (SOQL) to search your organization's Salesforce data for specific information. SOQL is similar to the SELECT statement in the widely used Structured Query Language (SQL) but is designed specifically for Salesforce data.What is Cascade delete in Salesforce?
“Cascade delete” is not a term specific to salesforce.com. It's actually a general relational database term used to describe the process by which child records are automatically deleted when their parent record is deleted or in salesforce.com (Master / Detail records).What is object in Salesforce?
Objects are database tables that allow us to store data specific to the organization in salesforce. Two type of objects in Salesforce. They are. 1. Examples of standard objects are accounts, contacts, opportunities, Leads, products, campaigns, cases, users, contracts, Report, and dashboards, etc.What is the limit of lookup relationship per object?
The absolute limit that you can request is 50. Each custom object can have up to two master-detail relationships and many lookup relationships. Each relationship is included in the maximum number of custom fields allowed. The Total relationship field included lookup can be 40 by default.Can we convert master detail to lookup?
You can convert a master-detail relationship to a lookup relationship as long as no roll-up summary fields exist on the master object. You can convert a lookup relationship to a master-detail relationship, but only if the lookup field in all records contains a value.What is the maximum number of external IDs an object may have?
up to 25
What is Governor limits in Salesforce?
Governor limits are Salesforce's way of forcing you to write efficient, scalable code. The good: Governor limits prevent other orgs from writing bad code and taking up all the cloud CPU. Coding limits in general are completely unique to Apex – consider it job security!What are Salesforce roles?
Roles. In salesforce, roles are defined so as to increase the data visibility a particular user has. The data visibility can be increased using sharing rules or by building role hierarchy. Role hierarchy allows the user sitting in higher level have access of records owned by users having role lower in hierarchy.How many Lookup Relationships fields can be created per child?
25 to 40 lookup fields are allowed per Object. The fields are not mandatory. If the parent is deleted the child is not affected. The Object has an owner field.What are governor limits in Apex and Salesforce?
Few important Governor Limits in Salesforce In one transaction, we can use a maximum of 20 SOSL queries. In one transaction, we can use a maximum of 150 DML statements. In one transaction, we can fetch a maximum of 50k records in SOQL. In one transaction, we can fetch a maximum of 2k records in SOSL.How many custom fields can I created in an object?
You can create 100 custom fields per object in Professional edition.How many roll up summary fields?
Users are currently limited to 10 roll up summary fields per object.What is junction object in Salesforce with example?
In this model, the junction object (Job Application, for example) functions as the linkage between the objects Applicant and Position. To implement this many-to-many relationship, create a lookup field for both Applicant and Position on the Job Application object.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. 
