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 business applications






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






3. Draws data from operational or external systems






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






5. A summary record for a specific reporting period






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






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






8. A query created by a BI user






9. Used to support day-to-day operations






10. Second stage of building a data mart






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






12. Look-up tables referred to by fact tables






13. Extract - Load and Transform






14. Requesting more information about a particular fact






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






16. Fifth stage of building a data mart






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






18. 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






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






20. Extract - Transform and Load






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






22. Third stage of building a data mart






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






24. Requesting information about related facts






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






26. First stage of building a data mart






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






28. A synonym for Business Intelligence






29. An alternative term for a data warehouse






30. Take data from a source system






31. A group of conformed dimensions






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






33. A report created by an IT department user






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






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. These extend BI into automating and optimising processes






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






38. Dimensions which are shared by two or more facts






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






40. The operational systems - data warehouse and data marts






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






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






43. A schema where dimensions are only connected to facts






44. Import data into a new database






45. A group of related fact tables






46. Fourth stage of building a data mart






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






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






49. A table containing foreign keys and values






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