What is the difference between IQueryable and DbQuery?

Question

Following this question / answer How to make the Entity Framework Data Context read

The solution is to make your DbContext collections of type DbQuery, but it's a pretty specialized type (it's buried in namespaces for EF).

So what is the functional difference between DbContext with this:

public DbQuery<Customer> Customers
{
    get { return Set<Customer>().AsNoTracking(); }
}

vs this:

public IQueryable<Customer> Customers
{
    get { return Set<Customer>().AsNoTracking(); }
}

... EF documentation is very easy when it comes to the DbQuery class, but I prefer the DbContext to consist of interfaces rather than classes, so I would like to avoid it. What additional benefits does the DbQuery class provide?

Update

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Answer 1

DBQuery - LINQ to Entities DbContext. LINQ . , IQueryable.

IOrderedQueryable

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IListSource 

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IDbAsyncEnumerable

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