You must have this . ABAP Development for SAP Netweaver BI- This book from SAP press is one of the best for ABAP consultants. Please read below on what the ABAP development for SAP Netweaver BI has to offer.

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ABAP DEVELOPMENT FOR SAP NETWEAVER BI – USER EXITS AND BAdIs is a must-have resource for BI consultants who have basic knowledge of ABAP™ as well as ABAP programmers who want to get started with BI development. After a brief overview of high-performance ABAP programming, through practical exercises you’ll learn how to structure the data flow from the source system up to the report and planning level. Click here to view full details and order your copy today.
Readers learn how to use all of the BI functionality of SAP NetWeaver®, from transformation, including the derivation of characteristics and key figures, to start and end routines and transfer and update rules. You will also benefit from expert instruction and techniques for implementing even the most complex requirements with a limited amount of work, by simply knowing how to choose the right user exits. Highlights include:

Performance aspects for BI programming
User exits and BAdIs in the extraction process
Customizing data import processes
Design options in reporting
User exits in planning
…and more!
Although this book is based on SAP NetWeaver 7.0, it also outlines the essential differences from previous releases. With volumes of commented code examples, this book enables you to quickly and easily implement your own custom developments in your daily work. Visit our online bookstore now to view the complete table of contents.
Be sure to browse through our fully updated listing of upcoming books, which features many newly announced titles on a variety of critical SAP®-related topics. For more information, please visit
www.sap-press.com.