Issues solved in RIA

1. To have best performance of the RIA application, app logic need to be available in client and server side. This problem is solved by auto generating the code at the client side while recompiling the project.
2. Asynchronous call – Asynch service call are supported in Domain service by using WCF infrastructure
3. Handling large data and data across different tier – Large amount of data can be access and filter using IQueryable object. Since entity objects used in domain service are serializable and so it can be access across different layer
4. Security/Access control – ASP.Net membership frameworks are integrated with RIA service to provide security systems to RIA service
5. Validation – Entity can be validated based using adding attribute to the class members

Example:
  Public class Member

    {

        [Key]

        Public int MemberId {get; set ;}

        Public string Fname {gets; set ;}

        [Required]

        Public string Lname {gets; set ;}  

        Public DateTime JoinDate {get; set ;}

        [Range (30, 90, ErrorMessage="sorry, you are either too young or too old for our club!")]

        Public int Age {get; set ;}

    }