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. The operational systems - data warehouse and data marts






2. Fourth stage of building a data mart






3. A summary record for a specific reporting period






4. Used to support day-to-day operations






5. Draws data from operational or external systems






6. Online Analytical Processing






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






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






9. Draws data from a data warehouse






10. A table containing foreign keys and values






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






12. A query created by a BI user






13. Dimensions which are shared by two or more facts






14. Second stage of building a data mart






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






16. A report created by an IT department user






17. Data about the data






18. A schema where dimensions are only connected to facts






19. Import data into a new database






20. Take data from a source system






21. A synonym for Business Intelligence






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






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






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






25. An alternative term for a data warehouse






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






27. Extract - Transform and Load






28. 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)






29. Extract - Load and Transform






30. Fifth stage of building a data mart






31. 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






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






33. Third stage of building a data mart






34. Requesting information about related facts






35. Look-up tables referred to by fact tables






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






37. The business applications






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






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






40. A group of related fact tables






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






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






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






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






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






46. Data accessible to the whole data warehouse






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






48. Requesting more information about a particular fact






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






50. A group of conformed dimensions