One Wcf Service?

Question

 

Hello Friends,

 

I have a task in my company. Make a Service and use this in every project.

Suppose an example . I need to save Marks of 50 students of class 9th 'A'. And save marks in Common Remote Database

from multiple type application like Android App [Android], Mobile Site[Asp.Net], Web Portal [Asp.Net C#], School Offline Software[Java Swing].

All applications are connected to remote database. Is there any way i send the marks at one place and execute them and insert into database.

All If-else are at one place. All Validations are one place. I don't need to update checks everywhere.

 

If you have an example of code please provide me.