Can You Describe The Basic Features Of The Relational Data Model And Discuss Their Importance To The End User And The Designer?

Basic features are,

1.1 Relations

1.2 Operators

1.3 Constraints

according to the above features you can find the advantages to the user and designer
first try to get an idea about the this model. Then understand the advantages of it. Then you can customize the advantages to the user and designer separately.