In the example above, a user runs a query looking for information on Employee 99.
The PE sees that the Primary Index Value EMP is used in the SQL WHERE clause. Because this is a Primary Index access operation, the PE knows this is a one AMP operation. The PE hashes 99 and the Row Hash is 00001111000011110000111100001111. This points to a bucket in the Hash Map that represents AMP 4. AMP 4 is sent a message to get the Row Hash: 00001111000011110000111100001111 and make sure its EMP 99.