⟩ Explain me the functions of data warehouse tools and utilities?
The functions performed by Data warehouse tool and utilities are Data Extraction, Data Cleaning, Data Transformation, Data Loading and Refreshing.
The functions performed by Data warehouse tool and utilities are Data Extraction, Data Cleaning, Data Transformation, Data Loading and Refreshing.
What is Execution Plan?
What are the different approaches used by Optimizer in choosing an execution plan?
What is the difference between OLAP and OLTP?
What are data modeling and data mining? Where it will be used?
What is the difference between aggregate table and materialized view?
"A dimension table is wide but the fact table is deep," Explain the statement in your own words.
What is a data profile?
What is Virtual Data Warehousing?
What is "method/1"?
What is the difference between mapping parameter & mapping variable in data warehousing?