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. Extract - Load and Transform






2. Look-up tables referred to by fact tables






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






4. The operational systems - data warehouse and data marts






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






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






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






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






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






10. The business applications






11. Dimensions which are shared by two or more facts






12. Fifth stage of building a data mart






13. A table containing foreign keys and values






14. These extend BI into automating and optimising processes






15. Requesting more information about a particular fact






16. Data about the data






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






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






19. Data accessible to the whole data warehouse






20. Draws data from operational or external systems






21. A group of conformed dimensions






22. A report created by an IT department user






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






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






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






26. Used to support day-to-day operations






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






28. A query created by a BI user






29. A summary record for a specific reporting period






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






31. Take data from a source system






32. Import data into a new database






33. 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)






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






35. An alternative term for a data warehouse






36. Requesting information about related facts






37. Extract - Transform and Load






38. Draws data from a data warehouse






39. Fourth stage of building a data mart






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






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






42. Online Analytical Processing






43. A group of related fact tables






44. First stage of building a data mart






45. 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






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






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






48. Second stage of building a data mart






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






50. Third stage of building a data mart