Test your basic knowledge |

Data Warehousing

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. First stage of building a data mart






2. Data accessible to the whole data warehouse






3. A daily snapshot for each day of a set period






4. Requesting more information about a particular fact






5. Splitting data tables into smaller tables for efficient access.






6. An operational system that provides data for a business information system






7. First stage of the data warehouse data architecture design process






8. Fifth stage of building a data mart






9. Unlike independent data marts the marts are linked via middleware






10. A system that allows people to access and analyse data for business management and performance improvement






11. A simplified form of a data warehouse supporting the work of a single line of business






12. Third stage of building a data mart






13. Online Analytical Processing






14. A synonym for Business Intelligence






15. Draws data from a data warehouse






16. Extract - Transform and Load






17. Import data into a new database






18. The business applications






19. Fourth stage of the data warehouse data architecture design process






20. Fourth stage of building a data mart






21. A logical design technique that presents data in a way that is optimised for high-performance access






22. A schema where dimensions are only connected to facts






23. Look-up tables referred to by fact tables






24. A report created by an IT department user






25. Second stage of the data warehouse data architecture design process






26. Dimensions which are shared by two or more facts






27. simplest and least costly architecture developed to operate independently of each other - poor solution






28. A query created by a BI user






29. Most famous data warehouse where a maintable infastructure includes a centralized data warehouse that serves for the needs of all organizational units (most favored 39 percent)






30. Business applications - methods and tools that support the caputre and use of master data






31. Take data from a source system






32. A computer system used to support the day-to-day operations of an organisation






33. A tool that allows users to write queries without having to learn SQL






34. Second stage of building a data mart






35. Tables containing summary records calculated from the main fact tables






36. Issues to consider when deciding EDW architecture: 1. Which database management system (DBMS) should be used? (ex: Crash Data" MS SQL) 2. Will ______________________ be used? 3. Will data migration tools be used to load the data warehouse?4. What too






37. All database architectural fall into one of these two categories: EDW or _________ (independent data marts - data mart bus architecture - hub and spoke architecture - centralized data warehouse - federated data warehouse)






38. A database table that maps (e.g.) manufacturing product IDs to sales product IDs






39. A group of related fact tables






40. Requesting information about related facts






41. The operational systems - data warehouse and data marts






42. Used to support day-to-day operations






43. An alternative term for a data warehouse






44. A schema where dimensions may be connected to facts or to other dimensions






45. Draws data from operational or external systems






46. Make changes to data so that it is compatible with a new database






47. Allows multiple CPUs to process multiple queries simultaneously - providing scalability.






48. A group of conformed dimensions






49. These extend BI into automating and optimising processes






50. A single low-level fact representing a single business operation