Fields in PWR apps represents what the columns represent in relational databases. It can store data values which are required for a particular object in a record. Fields can store many different types of data.
There are 3 types of fields:
(A) Standard Field:
There is one standard field in every Custom object and the field get created at the time of creation of object. This is cannot be deleted or edited.
For Standard object, the fields which are present by default in them, cannot be deleted from standard object.
(B) Custom Field:
Custom fields can be create on Standard or Custom object. They may or may not be required.
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A formula field can reference the value of another custom or standard field using a merge field.
(C) Audit Field:
Record Id:
A Record ID can help you identify a record in the database. Each record in system has a unique ID field assigned to it which is known as Record ID. It is system generated and cannot be edited or deleted. It is generated every time a new record is inserted into the application.
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If you do something at someone's instance, you do it because they have ordered or requested you to do it. The instance of operator is used to check whether an object is an instance of a particular class or not.
Owner:
Objects have an owner Id field that is a reference to the user who owns that object. Ownership is an important concept that affects the security model and has other implications throughout the system. Any user can query the owner field for any record they can access.
Tags:
Created By:
Created by field is a built-in (non-custom) audit field is used to record which syncing user created a record. You can not update that field once record is created.
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Is Test Record:
Is Deleted:
Erase On:
30 days
Is Published:
Once you publish an object, you can select which individual fields on that object are published. For standard objects that are published, a default set of fields is automatically published.
Is Manageable: