What are vaious etl tools in the market?
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What is data merging, data cleansing and sampling?
What is Grain & Granularity in Data Warehouse.
What are the primary ways to store data in OLAP?
Explain what are the tasks that loadmanger process will do?
Explain what are the steps to build the data warehouse?
suppose data are coming from different locations and those data will not change . is there any need to use surrogate key ?
What are the steps of implementing data warehousing?
Explain bus schema?
Explain why should you put your data warehouse on a different system than your oltp system?
What is Cognos script editor?
Which one among Star and snowflake schemas will occupy more space?
What is scd1 , scd2 , scd3?