Why we extend table?

mukesh18 · ‎03-19-2020

Hello Community,

I'm not clear about why we extend the table. Even if we insert records in the child table it gets populated in the base table.

please help me to get out of it.

Thanks In Advance!

Mohit Kaushik · ‎03-19-2020

Hi Mukesh,

Now in this case, if you see there will e different fields for Incident and Request. So will you keep all the fields in your task table records.

Like stage field is not required for incident but required for request. So when you will add this field to task it will display it for incident record and request record as well. This will only confuse the users and create complexity in the business flow.

So it is required to always extend the table if you want to use the default functionality of that table and want to customize it more instead of adding new fields to it.

Thanks,

Mohit Kaushik

Thanks,
Mohit Kaushik
ServiceNow MVP (2023-2025)

View solution in original post

Onkar Pandav · ‎03-19-2020

Onkar Pandav · ‎03-19-2020

Le Son · ‎07-26-2022

when use customize and when use extend table?

Harsh Vardhan · ‎03-19-2020

from technical point, it's inheritance concept ( core java) which you can remember here while extending the table.

Inheritance in Java is a mechanism in which one object acquires all the properties and behaviors of a parent object. It is an important part of OOPs (Object Oriented programming system).

The idea behind inheritance in Java is that you can create new classes that are built upon existing classes. When you inherit from an existing class, you can reuse methods and fields of the parent class. Moreover, you can add new methods and fields in your current class also.

Inheritance represents the IS-A relationship which is also known as a parent-child relationship

https://www.javatpoint.com/inheritance-in-java

Le Son · ‎07-26-2022

when use customize and when use extend table?