MAIN BOOKS 1. DATA WAREHOUSING IN THE REAL WORLD : Sam Anshory & Dennis Murray, Pearson 2. DATA MINING CONCEPTS AND TECHNIQUES : Jiawei Han & Micheline.

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Presentation transcript:

MAIN BOOKS 1. DATA WAREHOUSING IN THE REAL WORLD : Sam Anshory & Dennis Murray, Pearson 2. DATA MINING CONCEPTS AND TECHNIQUES : Jiawei Han & Micheline Kamber, Morgan Kaufmann 3. BUILDING THE DATA WAREHOUSE, W.H. Inmon, John Wiley & Sons 4. DATA MINING TECHNIQUES : Arun Pujari, Universities-Press

ADDITIONAL READINGS  INTRODUCTION TO DATA MINING WITH CASE STUDIES, G. K. Gupta (PHI)  DATA MINING Introductory & Advanced Topics, Margaret Dunham, Prentice Hall

OLTP & OLAP  OLTP covers day-to-day operations of an organization such as purchasing, inventory, payroll etc.  OLAP caters to knowledge workers and aid in decision making

OLTP & OLAP  OLTP is customer oriented & used by clerks, clients & IT professional  OLAP is market oriented used for data analysis by knowledge workers including managers, executives and analysts

OLTP & OLAP  OLTP uses current data, usually very detailed  OLAP uses large amounts of historical data with facilities for summarization, aggregation. Information is maintained at different levels of granularity

OLTP & OLAP  OLTP uses E-R model  OLAP uses STAR or SNOWFLAKE model & a subject oriented database design

OLTP & OLAP  OLTP consist of small, atomic transactions. No of records usually in terms of tens  OLAP consist mainly of read-only operations. No of records accessed usually in terms of millions

OLTP & OLAP  In OLTP number of users in terms of thousands, DB size is 100 MB to GB, high performance, high availability Metric for measurement is transaction throughput  In OLAP number of users in terms of hundreds, 100 GB to TB, high flexibility & end-user autonomy Metric for measurement is query throughput

OLTP & OLAP  OLTP - unit of work is short simple transaction, detailed flat relational view, index/hashing on primary key for operation  OLAP – unit of work is complex query, summarized multi-dimensional view, lots of scan involved in operation