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. A group of conformed dimensions






2. A summary record for a specific reporting period






3. A report created by an IT department user






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






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






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






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






8. 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)






9. 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)






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






11. Extract - Transform and Load






12. Import data into a new database






13. A schema where dimensions are only connected to facts






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






15. An alternative term for a data warehouse






16. Draws data from a data warehouse






17. The business applications






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






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






20. Used to support day-to-day operations






21. A table containing foreign keys and values






22. Dimensions which are shared by two or more facts






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






24. A synonym for Business Intelligence






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






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






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






28. A group of related fact tables






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






30. Draws data from operational or external systems






31. Look-up tables referred to by fact tables






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






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






34. The operational systems - data warehouse and data marts






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






36. A query created by a BI user






37. Requesting more information about a particular fact






38. Extract - Load and Transform






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






40. First stage of building a data mart






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






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






43. Data accessible to the whole data warehouse






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






45. Take data from a source system






46. Data about the data






47. 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






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






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






50. Requesting information about related facts