Which one object is related to another?
In our Account to Contact example above, the relationship between the two objects is a lookup relationship. A lookup relationship essentially links two objects together so that you can “look up” one object from the related items on another object. Lookup relationships can be one-to-one or one-to-many.
How objects and class are related?
an object is an element (or instance) of a class; objects have the behaviors of their class. The object is the actual component of programs, while the class specifies how instances are created and how they behave. method: a method is an action which an object is able to perform.
Where do I find the child relationship name?
On the Property__c element, click the gear icon and then select View Object. The Object Manager opens displaying the Property__c object. Click Fields & Relationships. Click the Broker field label. In the Lookup Options section, find the Child Relationship Name.
How to retrieve data from lookup relationship object of child object?
From parent to child we can query with inner query with child relationship name . From child to parent we can query with dot notaion . Please check the below link . Let me know if it helps . as i mentioned above here am not worrying about Parent to child and Child to Parent relationship.
How are custom objects used in relationship queries?
Custom objects can participate in relationship queries. Salesforce ensures that your custom object names, custom field names, and the relationship names that are associated with them remain unique, even if a standard object with the same name is available now or in the future.
When to use API names and custom objects?
The same process applies to custom objects—when they are created, they have an API Name, the object named appended by __c, which must be used. When you use a relationship name in a query, you must use the relationship names without the __c.