Page 247 - DCAP603_DATAWARE_HOUSING_AND_DATAMINING

Unit 12: Metadata and Warehouse Quality

12.7 self assessment notes

Choose the appropriate answers:

1. GUI stands for:
(a) Graphical User Interface
(b) Graphical User Image
(c) Graphical User Interchange
(d) Graphical User Information

2. XML stands for:
(a) Extension Markup Language
(b) Extensible Markup Language
(c) Extensible Makeup Language
(d) Evaluation Markup Language

3. DWQ stands for:
(a) Data Warehouse Quantity
(b) Data object Warehouse Quality
(c) Data Warehouse Quality

(d) Database Warehouse Quality
Fill in the blanks:
4. A ......................... should provide persistent stores for the management and sharing of meta
data.

5. ......................... are values which express some measured property of the object.
6. A quality goal roughly expresses .........................
7. A ......................... represents an actual measurement of a quality value.
8. The process may also store some results of its execution in the metadata repository.
9. The ......................... is composed of several steps, of which one in our example is data
cleaning.
10. A ......................... on the metadata repository can then search for the processes which have
improved the quality of a certain object.
12.8 review Questions

1. What do you mean by data quality?
2. “Business quality is made up of business drivers, or concepts that point out a company’s
strategic plans.” Discuss.
3. “Information doesn’t have value if it’s not used.” Explain.
4. Describe the use of metadata management in data warehouse.
5. Take a live example and explain metadata hub in detail.
6. Describe quality meta model with the help of suitable example.

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