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. Data accessible to the whole data warehouse






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






3. Extract - Transform and Load






4. A schema where dimensions are only connected to facts






5. A summary record for a specific reporting period






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






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






8. Requesting more information about a particular fact






9. Online Analytical Processing






10. Extract - Load and Transform






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






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






13. 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)






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






15. A group of conformed dimensions






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






17. Used to support day-to-day operations






18. Look-up tables referred to by fact tables






19. These extend BI into automating and optimising processes






20. An alternative term for a data warehouse






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






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






23. Fourth stage of building a data mart






24. A query created by a BI user






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






26. 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






27. First stage of building a data mart






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






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






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






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






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






33. Third stage of building a data mart






34. The operational systems - data warehouse and data marts






35. A synonym for Business Intelligence






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






37. The business applications






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






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






40. A table containing foreign keys and values






41. 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)






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






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






44. Second stage of building a data mart






45. Data about the data






46. Take data from a source system






47. Draws data from operational or external systems






48. Import data into a new database






49. A report created by an IT department user






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