Virtual University of Pakistan. Data Warehousing. Lecture-4 Introduction and Background. Ahsan Abdullah Assoc. Prof. & Head Center for Agro-Informatics Research www.nu.edu.pk/cairindex.asp FAST National University of Computers & Emerging Sciences, Islamabad. Introduction and Background.
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OLTP (On Line Transaction Processing)
Select tx_date, balance from tx_table
Where account_ID = 23876;
Select balance, age, sal, gender from customer_table, tx_table
Where age between (30 and 40) and
Education = ‘graduate’ and
CustID.customer_table = Customer_ID.tx_table;
OLTP: OnLine Transaction Processing (MIS or Database System)
Data Warehouse Server