密钥主要的重复条目“ID”？

I have created a database named 'hmdb' and in that database two tables named as table1 and table2 using wamp. Both the tables have ID field as primary key. My java code actually checks first whether the ID is present in table1 or not, if so(actually this is for checking whether it is existing user or not, if not then patient have to first register himself) then it opens a frame where doctor fills patients information with his ID. I have created a database named 'hmdb' and in t