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 related fact tables






2. Requesting more information about a particular fact






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






4. Extract - Transform and Load






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






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






7. An alternative term for a data warehouse






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






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






10. Data about the data






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






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






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






14. First stage of building a data mart






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






16. Requesting information about related facts






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






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






19. A summary record for a specific reporting period






20. Draws data from a data warehouse






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






22. 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)






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






24. Used to support day-to-day operations






25. Extract - Load and Transform






26. Take data from a source system






27. 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






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






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






30. The operational systems - data warehouse and data marts






31. Data accessible to the whole data warehouse






32. A report created by an IT department user






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






34. A query created by a BI user






35. A schema where dimensions are only connected to facts






36. A group of conformed dimensions






37. Second stage of building a data mart






38. A table containing foreign keys and values






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






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






41. Third stage of building a data mart






42. Fifth stage of building a data mart






43. Fourth stage of building a data mart






44. Draws data from operational or external systems






45. The business applications






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






47. These extend BI into automating and optimising processes






48. Online Analytical Processing






49. 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)






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