Data Mining is defined as the procedure of extracting information from huge sets of data. Now a day, Data Mining technique placing a vital role in the Information Industry.
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Biomining is an application of biotechnology in recovery of various minerals from ore. Biomining is defined as extracting mineral ores or enhancing the mineral recovery from mines using microorgani...
Biomining is an application of biotechnology in recovery of various minerals from ore. Biomining is defined as extracting mineral ores or enhancing the mineral recovery from mines using microorgani...
Multiple Choice Questions . 1. __________ is a subject-oriented, integrated, time-variant, nonvolatile collection of data in support of management decisions. A. Data Mining. B. Data W arehous arehousing. ing. C. Web Mining. D. Text Mining. ANSWER: B 2. The data W arehous arehouse e is__________. A. read only. B. write only. C. read write only. D. none. ANSWER: A 3. Expansion for DSS in DW is__________. is__________. A. Decision Support Support system. B. Decision Single System. C. Data Storable System. D. Data Support System. ANSWER: A 4. The important aspect of t he data warehouse environment is that data found within the data warehouse is___________. A. subject-oriented. subject-oriented. B. time-variant. C. integrated. D. All of the above. ANSWER: D 5. The time horizon in Data warehouse is usually __________. __________. A. 1-2 years. B. 3-4years. C. 5-6 years. D. 5-10 years. ANSWER: D 6. The data is stored, retri eved & updated in ____________. ____________. A. OLAP. B. OLTP. C. SMTP. D. FTP. ANSWER: B 7. __________describes __________describes the data contained c ontained in the data warehous warehouse. e. A. Relational data. B. Operational data. C. Metadata. D. Informational data. ANSWER: C 8. ____________predicts ____________predicts future trends & behaviors, allowing business managers to m ake proactive, knowledge-driven knowledge-d riven decisions decisions.. A. Data warehouse. warehouse. B. Data mining.
C. Datamarts. D. Metadata. ANSWER: B 9. __________ is the heart of the warehouse. A. Data mining database servers. B. Data warehouse database servers. C. Data mart database servers. D. Relational data base servers. ANSWER: B 10. ________________ is the specialized data warehouse database. A. Oracle. B. DBZ. C. Informix. D. Redbrick. ANSWER: D 11. ________________defines the structure of the data held i n operational databases and used by operational applications. A. User-level metadata. B. Data warehouse metadata. C. Operational metadata. D. Data mining metadata. ANSWER: C 12. ________________ is held in the catalog of the warehouse database system. A. Application level metadata. B. Algorithmic level metadata. C. Departmental level m etadata. D. Core warehouse metadata. ANSWER: B 13. _________maps the core warehouse metadata to business concepts, f amiliar and useful to end users. A. Application level metadata. B. User level metadata. C. Enduser level metadata. D. Core level metadata. ANSWER: A 14. ______consists of f ormal definitions, such as a COBOL layout or a database schema. A. Classical metadata. B. Transformation metadata. C. Historical metadata. D. Structural metadata. ANSWER: A 15. _____________consists of information in the enterprise that is not in classical form. A. Mushy metadata. B. Differential metadata. C. Data warehouse. D. Data mining. ANSWER: A 16. . ______________databases are owned by particular departments or business groups. A. Informational. B. Operational. C. Both informational and operational. D. Flat.
ANSWER: B 17. The star schema is composed of __________ fact table. A. one. B. two. C. three. D. four. ANSWER: A 18. The time horizon in operational environment is ___________. A. 30-60 days. B. 60-90 days. C. 90-120 days. D. 120-150 days. ANSWER: B 19. The key used in operational environment may not hav e an element of__________. A. time. B. cost. C. frequency. D. quality. ANSWER: A 20. Data can be updated in _____environment. A. data warehouse. B. data mining. C. operational. D. informational. ANSWER: C 21. Record cannot be updated in _____________. A. OLTP B. files C. RDBMS D. data warehouse ANSWER: D
