What are the most relevant differences between operational and decision support data?
Answer to relevant QuestionsWhat is a data warehouse, and what are its main characteristics? How does it differ from a data mart?The data warehousing project group has invited you to provide an OLAP overview. The group’s members are particularly concerned about the OLAP client/server architecture requirements and how OLAP will fit the existing ...Discuss the most common performance improvement techniques used in star schemas.Explain ROLAP, and list the reasons you would recommend its use in the relational database environment.What is the SQL command to list the number of product sales (number of rows) and total sales by month, with subtotals by month and a grand total for all sales?
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