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Database - Data Warehousing - Discussion

Discussion Forum : Data Warehousing - General Questions (Q.No. 12)
Data Warehousing
12.
The extract process is which of the following?
Capturing all of the data contained in various operational systems
Capturing a subset of the data contained in various operational systems
Capturing all of the data contained in various decision support systems
Capturing a subset of the data contained in various decision support systems
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
5 comments Page 1 of 1.
Priyanshu said:   3 years ago
Extraction simply means that take a subset of a process not fully and clean that and store it in DWH.
Rajiv said:   1 decade ago
Extract not meant for all valid data available in various operating systems?
Nayeem FS said:   1 decade ago
First of all extracting process means data mining. We search for a particular record & retrieve those record from Data Warehouse and then extract the needed data from the record and finally process over that record.
Ilakkiya .M said:   1 decade ago
Extracting as the name suggests, captures a subset from the operational system.
M.indu maheswari said:   1 decade ago
Extract process is nothing, but a collection or extract of any essential and important details from a various resources like a database or any directory.
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