CS614 DATA WAREHOUSING MID TERM GRAND QUIZ 2021 | MEGA File | 95-100 percent Marks by Study Guruz
CS614 DATA WAREHOUSING MID TERM GRAND QUIZ 2021 Vu Pakistan | MEGA File & Today Quiz| 95-100 percent Marks by Study Guruz
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CS614 DATA WAREHOUSING | 30-6-2021 MID TERM |
FOR ANSWERS OF TODAY QUIZ, SEE QUESTION NUMBER AND QUIKCLY JUMP TO QUESTION IN YOUTUBE VIDEO.
1. The response times of OLTP queries are in milliseconds to seconds, while that of data warehouse queries are in:
2. The application of data and information leads to
3. Decision support system queries deal with number of columns.
4. One goal of horizontal splitting is spreading rows of a table for exploiting
5. Which is not a/an Data Quality Validation Technique?
6. Normalization is used to reduce
7. Decision support system (DSS) is a/an
8. Relational databases allow you to navigate the data in that is appropriate using the primary, foreign key structure within the data model.
9. If actual data structure does not conform to documented formats then it is called:
10. The growth of master files and magnetic tapes exploded in
11. Simple scalar transformation is a
12. mapping from one set of values to another set of values using straightforward rules.
13. can be used when some columns are rarely accessed rather than other columns or when the table has wide rows or header or both.
14. Information can answers questions like “what”, “who’: and “when” while knowledge can answer questions like
15. “Header size is reduced, allowing more rows per block, thus reducing I/O1’. The above statement is TRUE with respect to:
16. The issue(s) of “Adding redundant column” include(s):
17. Development of data warehouse is hard because data sources are usually
18. Which is not a basic task of data transformation?
19. Suppose the size of the attribute ‘Computerized National Identity Card (CNIC) no:’ is changed in NADRA database. This transformation refers to:
20. Normally ROLAP is implemented using.
21. should not be present in a relation, so that it would be in second normal form (2NF).
22. Suppose in system A, the possible values of “Gender' attribute were “Male” & “Female”, however in data warehouse, the values stored were “M” for male and “F” for female. The above scenario is an example of:
23. An OLTP system is always good at
24. One of the possible issues faced by web scrapping is that: Junky Data
25. is a logical design technique that seeks to present the data in a standard, instinctive structure that supports high-performance and ease of understanding.
26. In SQL generation is vastly simplified for front-end tools when the data is highly structured.
27. Which is not a/an characteristics of data quality? Reliability
28. Which of the following is not a technique of :De-Normalization’?
29. Which of the following is an example of derived attribute? Age
30. A Pattern is defined by a group of records that have similar characteristics (“behavior) for p% of the fields in the data set, where p is a user-defined value (usually above 90).
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