LINQ include multiple children

Another way to achieve the same is

        var qry = from d in context.Databases
                      .Include(x => x.Tables)
                      .Include(x => x.Tables.Select(c => c.Fields))
                      .Include(x => x.Tables.Select(f => f.ForeingKeys))
                  select d;

I prefer do not use literals.

var qry = from d in context.Databases
    .Include("Tables.Fields")
    .Include("Tables.ForeingKeys")
  select d;

EF will automatically include tables for you and then include those navigation properties in the query.