Hiding or restricting access to the contacts your android phone.

I want to make an application in android which will hide the selected contacts of your phone book, after launching this application if any other application accesses the contents the the hidden contacts will not be available to that application too.
So, my question is, how can I do this?
Does android database SQL light provide any type of flags that can help me to restrict the access to the contacts?
Can I hide the contacts from all other applications?