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. 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






2. Online Analytical Processing






3. Fifth stage of building a data mart






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






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






6. First stage of building a data mart






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






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






9. A report created by an IT department user






10. A query created by a BI user






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






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






13. The operational systems - data warehouse and data marts






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






15. Extract - Transform and Load






16. Requesting information about related facts






17. Used to support day-to-day operations






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






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






20. These extend BI into automating and optimising processes






21. A group of conformed dimensions






22. Dimensions which are shared by two or more facts






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






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






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






26. 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)






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






28. The business applications






29. Extract - Load and Transform






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






31. 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)






32. An alternative term for a data warehouse






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






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






35. Draws data from operational or external systems






36. Second stage of building a data mart






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






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






39. A group of related fact tables






40. A table containing foreign keys and values






41. Take data from a source system






42. Draws data from a data warehouse






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






44. Fourth stage of building a data mart






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






46. Look-up tables referred to by fact tables






47. Data about the data






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






49. Requesting more information about a particular fact






50. A summary record for a specific reporting period