Relationships in Salesforce | Why relationships are created?

In this video, not only we will learn about relationships in salesforce but also why we need relationships in the first place.

[@vikastiwari6780]

Most of time I saw they ask questions on look-up and master details relationship difference.
Key difference
In look-up parents record selection not mandatory
In master parents record selection mandatory
In master details rollup summary field apply and same on look-up this is not applicable
Master support cascade deletion behaviour
Same look-up if parents record delete then no effect on child record.........
These are major difference

[@prasannaraja2714]

Straight to point without any confusion. By explaining with help of table is easy to understand....😀

[@tharunteja6113]

This tutorial is understood but kindly show in Salesforce so that we will understand pratically

[@sfrangers]

Sure, I'll explain it in my next video

[@nikitasaini7850]

Do We have one to one relationship in Salesforce? If yes, how can we create it in Salesforce?