What are the Navigation Properties in Entity Framework

Question

I am new to Entity Framework. When the Visual Studio creates Model diagram we can see mainly two things in Entities.Propertie and Navigation Properties,So what are these Navigat

Answer 1

Navigation properties represents related entites to the principal entity. Foreign Keys are usually represented by navigation properties.

Ex : if you have two tables Invoice and invoice items and those tables have a relation 1-> many so you'll find a navigation property in invoice entity that lists all invoice items related to an invoice.
Hope it helps.