Hi 

I think :

Data Mining Concepts and Techniques (Third Edition)

Book by Jiawei Han

and 

Introduction To Data Mining

Book by Michael Steinbach, Pang-Ning Tan, and Vipin Kumar

are good textbooks in data mining.

The below book is good for professionals (it does not address data mining using a scientifc perspective, but covers many important concepts):

Data Mining Techniques: For Marketing, Sales, and Customer Relationship Management

Gordon S. Linoff, Michael J. A. Berry

http://www.wiley.com/WileyCDA/WileyTitle/productCd-0470650931.html

Dear Deogratias Kibira ,

Look the link, may be useful.

https://www.researchgate.net/post/Can_anyone_recommend_a_good_data_mining_book_in_particular_one_that_sets_it_apart_from_machine_learning

https://www.quora.com/What-is-the-best-book-for-learning-data-mining

Regards, Shafagat

The growing interest in data mining is motivated by a common problem across disciplines: how does one store, access, model, and ultimately describe and understand very large data sets? Historically, different aspects of data mining have been addressed independently by different disciplines. This is the first truly interdisciplinary text on data mining, blending the contributions of information science, computer science, and statistics.

The book consists of three sections. The first, foundations, provides a tutorial overview of the principles underlying data mining algorithms and their application. The presentation emphasizes intuition rather than rigor. The second section, data mining algorithms, shows how algorithms are constructed to solve specific problems in a principled manner. The algorithms covered include trees and rules for classification and regression, association rules, belief networks, classical statistical models, nonlinear models such as neural networks, and local "memory-based" models. The third section shows how all of the preceding analysis fits together when applied to real-world data mining problems. Topics include the role of metadata, how to handle missing data, and data preprocessin

I have found the following book quite introductive :-)

Russell, Matthew A. Mining the Social Web: Data Mining Facebook, Twitter, LinkedIn, Google+, GitHub, and More. " O'Reilly Media, Inc.", 2013.

Thank you all for your suggestions.  I am going to check them all out