Data aggregation
Define the term data aggregation?
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An operational data source generally consists of the records of individual transactions just like the product sales. If user of the data warehouse only requires a summed total, you may decrease the records to more manageable number by aggregating the data.
Illustrates the term Merge Sort?
Describe briefly the measure objects?
What are the differences between perfect competition and Monopoly?
Illustrates the term Monopolistic Competition?
What are the purposes of using lookups?
Explain the Aggregator Transformation?
Explain the object qualification?
What do you understand by the term ACID transaction in DBMS? Describe briefly?
Write down the employ of incremental aggregation?
What is meant by the term merge?
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