Thanks for gret support. All answers have taught to me something.
I want to start to my prohect with simple steps. (1 Door and 5 tags) . I will buy these compnents :
Arduino Due:
Ethernet Shield :
RTC with battery :
And i need a 8 channel relay board for such door lock but i couldn't find :
http://www.ebay.com/itm/NO-Mode-Fail-Secure-DC-12V-Deadbolt-Strike-Electric-Drop-Bolt-Timer-Door-Lock-SS-/131191391131
I want to learn your ideas about these products. I want RTC, relay board and ethernet shiled for next steps of board. And these products will come in 20-25 days. So i want to buy them all together at once 
And i know prices are very low but i searched them at Turkish forums and almost everybody has pleasure.
Regards