Top 350+ Solved Data Mining and Data Warehouse MCQ Questions Answer
Q. The first International conference on KDD was held in the year _____________.
a. 1996.
b. 1997.
c. 1995.
d. 1994.
Q. Removing duplicate records is a process called _____________.
a. recovery.
b. data cleaning.
c. data cleansing.
d. data pruning.
Q. ____________ contains information that gives users an easy-to-understand perspective of theinformation stored in the data warehouse.
a. business metadat
b. technical metadata.
c. operational metadata.
d. financial metadata.
Q. _______________ helps to integrate, maintain and view the contents of the data warehousing system.
a. business directory.
b. information directory.
c. data dictionary.
d. database.
Q. Discovery of cross-sales opportunities is called ________________.
a. segmentation.
b. visualization.
c. correction.
d. association.
Q. Data marts that incorporate data mining tools to extract sets of data are called ______.
a. independent data mart.
b. dependent data marts.
c. intra-entry data mart.
d. inter-entry data mart.
Q. ____________ can generate programs itself, enabling it to carry out new tasks.
a. automated system.
b. decision making system.
c. self-learning system.
d. productivity system.
Q. The power of self-learning system lies in __________.
a. cost.
b. speed.
c. accuracy.
d. simplicity.
Q. Building the informational database is done with the help of _______.
a. transformation or propagation tools.
b. transformation tools only.
c. propagation tools only.
d. extraction tools.
Q. Which of the following is not a component of a data warehouse?
a. metadat
b. current detail data.
c. lightly summarized data.
d. component key.
Q. ________ is data that is distilled from the low level of detail found at the current detailed leve.
a. highly summarized dat
b. lightly summarized data.
c. metadata.
d. older detail data.
Q. Highly summarized data is _______.
a. compact and easily accessible.
b. compact and expensive.
c. compact and hardly accessible.
d. compact.
Q. A directory to help the DSS analyst locate the contents of the data warehouse is seen in ______.
a. current detail dat
b. lightly summarized data.
c. metadata.
d. older detail data.
Q. Metadata contains atleast _________.
a. the structure of the dat
b. the algorithms used for summarization.
c. the mapping from the operational environment to the data warehouse.
d. all of the above.