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. Requesting more information about a particular fact






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






3. Take data from a source system






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






5. Data accessible to the whole data warehouse






6. The operational systems - data warehouse and data marts






7. Extract - Load and Transform






8. A schema where dimensions are only connected to facts






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






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






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






12. A group of related fact tables






13. A group of conformed dimensions






14. Draws data from a data warehouse






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






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






17. A summary record for a specific reporting period






18. The business applications






19. A query created by a BI user






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






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






22. A table containing foreign keys and values






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






24. Data about the data






25. Fourth stage of building a data mart






26. Fifth stage of building a data mart






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






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






29. An alternative term for a data warehouse






30. Draws data from operational or external systems






31. Import data into a new database






32. Extract - Transform and Load






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






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






35. 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)






36. 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)






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






38. Look-up tables referred to by fact tables






39. First stage of building a data mart






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






41. Dimensions which are shared by two or more facts






42. A report created by an IT department user






43. These extend BI into automating and optimising processes






44. A synonym for Business Intelligence






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






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






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






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






49. Used to support day-to-day operations






50. 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