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. Fourth stage of the data warehouse data architecture design process






2. Extract - Transform and Load






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






4. Third stage of building a data mart






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






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






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






8. These extend BI into automating and optimising processes






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






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






11. Fifth stage of building a data mart






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






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






14. Draws data from operational or external systems






15. A group of conformed dimensions






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






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






18. The business applications






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






20. Data accessible to the whole data warehouse






21. A synonym for Business Intelligence






22. Import data into a new database






23. An alternative term for a data warehouse






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






25. A schema where dimensions are only connected to facts






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. Fourth stage of building a data mart






28. Extract - Load and Transform






29. 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)






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






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






32. 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)






33. Requesting more information about a particular fact






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






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






36. Data about the data






37. The operational systems - data warehouse and data marts






38. A group of related fact tables






39. A query created by a BI user






40. Online Analytical Processing






41. Draws data from a data warehouse






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






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






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






45. Take data from a source system






46. A report created by an IT department user






47. Look-up tables referred to by fact tables






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






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






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