Test your basic knowledge |

Database Fundamentals

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 characteristic or property of an entity






2. A minimal collection of columns (attributes) in a table on which all columns are functionally dependent and that is chosen as the main direct-access vehicle to individual rows.






3. The process of creating collections of records that share some common characteristics






4. The portion of the system catalog that contains view information






5. A data value meaning "unknown" or "not applicable"






6. A rule in Access that data entered in a field must satisfy






7. A query that deletes all records that satisfy some criterion






8. A combination of two tables consisting of all records that are in either table






9. The field or fields on which an index is built






10. Two simple criteria in a query the are combined with the AND or OR operators






11. The part of an SQL SELECT command that indicates a sort order






12. A combination of criteria in which at least on the criteria must be true






13. To indicate the table (relation) of which a given column (attribute) is a part by preceding the column name with the table name.






14. The prevention of unauthorized access to a database






15. A message in Access that is displayed when a validation rule is violated






16. The SQL command that drops (deletes) and index from a table






17. A collection of relations






18. Additional information required by an action in a data macro to complete the action






19. A database has integrity if the data in it satisfies all established integrity constraints






20. When comparing tables an intersection is a new table containing all rows that are in both original tables






21. The portion of the Query Design window in Access where you enter fields or criteria or sort orders and so on






22. An update option in which related records are automatically updated






23. An access query that creates a table using the results of a query






24. The prevention of unauthorized access to a database






25. The individual or group that is responsible for a database






26. A screen object you use to maintain or view and print data from a database






27. A rule that must be followed by data in a database






28. A query that deletes all records that satisfy some criterion






29. The SQL statement that is used to grant different types of privileges to users of a dataabase






30. A characteristic or property of an entity






31. A collection of relations






32. A collection of relations






33. The most common form of a join






34. A relationship between two entities in which each occurrence of the first entity is related to many occurrences of the second entity and each occurrence of the second entity is related to or at most one occurrence of the first entity






35. The relational algebra command used to select columns from a table






36. A field whose value is computed from other fields in the database






37. A relational data manipulation language in which new tables are created from existing tables through the use of a set of operations






38. The area of memory in MySQL that stores the most recently entered command






39. An association between entities






40. A graphic model for database design in which entities are represented as rectangles and relationships are represented as either arrows or diamonds connected to the entities they relate






41. The relational algebra command to select rows from a table






42. A Characteristic or property of an entity






43. When sorting on two fields - the less important field






44. The SQL command that is used to change the structure of a table






45. A view that consists of a subset of the rows and columns in a table






46. The plural of Criterion






47. The field on which data are sorted






48. Duplication of data or the storing of the same data in more than one place.






49. A structure that can store information about multiple types of entities - the attributes of these entities and the relationships among those entities






50. The process of determining the content and structure of data in a database in order to support some activity on behalf of a user or group of users