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. 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






2. A query created by a BI user






3. A group of related fact tables






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






5. Extract - Load and Transform






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






7. 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)






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






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






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






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






12. The operational systems - data warehouse and data marts






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






14. A group of conformed dimensions






15. Second stage of building a data mart






16. A report created by an IT department user






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






18. Draws data from operational or external systems






19. Used to support day-to-day operations






20. Online Analytical Processing






21. Requesting information about related facts






22. A schema where dimensions are only connected to facts






23. Extract - Transform and Load






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






25. Data about the data






26. 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)






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






28. An alternative term for a data warehouse






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






30. A table containing foreign keys and values






31. A summary record for a specific reporting period






32. Third stage of building a data mart






33. Look-up tables referred to by fact tables






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






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






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






37. Draws data from a data warehouse






38. First stage of building a data mart






39. Take data from a source system






40. Data accessible to the whole data warehouse






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






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






43. Fifth stage of building a data mart






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






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






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






47. These extend BI into automating and optimising processes






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






49. Import data into a new database






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