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






2. Look-up tables referred to by fact tables






3. A summary record for a specific reporting period






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






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






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






7. Data accessible to the whole data warehouse






8. Draws data from operational or external systems






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






10. The level of detail required for a fact to be useful






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






12. Third stage of building a data mart






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






14. Data about the data






15. The operational systems - data warehouse and data marts






16. 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)






17. Used to support day-to-day operations






18. Third stage of the data warehouse data architecture design process






19. A group of related fact tables






20. These extend BI into automating and optimising processes






21. A table containing foreign keys and values






22. Take data from a source system






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






24. An alternative term for a data warehouse






25. The business applications






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






27. A schema where dimensions are only connected to facts






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






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






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






31. Draws data from a data warehouse






32. Requesting information about related facts






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






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






35. 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






36. Online Analytical Processing






37. 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)






38. Fifth stage of building a data mart






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






40. A query created by a BI user






41. A synonym for Business Intelligence






42. Dimensions which are shared by two or more facts






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






44. A visual display of the most important information needed by a particular user






45. A group of conformed dimensions






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






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






48. Fourth stage of building a data mart






49. Import data into a new database






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