Hi,
Normal Class : We can use existing ABAP standard functionality inside methods and can be changeable and createable through SAP GUI/ABAP Ecplise.
AMDP Class : Only we have to use HANA SQL (Since we are pushing code to HANA DB) and required ABAP ecplise for development.
We can not use for all entries inside AMDP because it supports HANA SQL only.
Handling Select options : Handling of SELECT-OPTIONS parameters within AMDP
-Amol