i want know about SAP ASE, please help
You may want to check this documentation : Getting Started with SAP Applications Using SAP Adaptive Server Enterprise , it is a good summarize about SAP ASE informations as initial approach from a Netweaver/SAP applications point of view. You may then go in deeper with the links that Dwayne provided.
visit the link and go through it, you will find all about the SAP ASE
on the page find these two links, will help you a lot
with kind regards