Simply put, custom objects are database tables in Salesforce. All data related to an enterprise can be stored in Salesforce.com, and for that there is a need for a junction object, which is a custom object. The custom object has a Master–Detail relationship. We can create a Master–Detail relationship between two objects, and then connect a child object as a related list. Custom objects, which can be listed in Custom Settings, has a set of static data that is reusable.
In the process, the custom object has to be defined first and then the following steps need to be followed:
Join records with the custom object
Custom object data is displayed in custom lists
Create a custom tab for the custom object
Build page layouts
Create a dashboard and a report for analyzing the custom object
Moreover, the custom tab, app, and object can be shared.