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. Third stage of building a data mart






2. Draws data from operational or external systems






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






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






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






6. A group of conformed dimensions






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






8. Extract - Transform and Load






9. Online Analytical Processing






10. Data accessible to the whole data warehouse






11. First stage of building a data mart






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






13. A table containing foreign keys and values






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






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






16. Fourth stage of building a data mart






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






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






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






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






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






22. 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)






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






24. Requesting information about related facts






25. Dimensions which are shared by two or more facts






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. Look-up tables referred to by fact tables






28. Fifth stage of building a data mart






29. Used to support day-to-day operations






30. 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






31. A query created by a BI user






32. These extend BI into automating and optimising processes






33. Requesting more information about a particular fact






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






35. The operational systems - data warehouse and data marts






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






37. The business applications






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






39. Take data from a source system






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






41. An alternative term for a data warehouse






42. Extract - Load and Transform






43. A report created by an IT department user






44. A schema where dimensions are only connected to facts






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






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






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






48. Data about the data






49. A summary record for a specific reporting period






50. A group of related fact tables