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 query that deletes all records that satisfy some criterion






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






3. A characteristic or property of an entity






4. In an Access query the line drawn between tables to indicate how they are related






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






6. A punctuation mark - such as a semicolon - that separates pieces of data






7. A question the answer to which is found in the database






8. A characteristic or property of an entity






9. 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






10. When sorting on two fields this is the more important field






11. The part of an SQL SELECT command that indicates the condition rows must satisfy to be displayed in the query results






12. An application program's or an individual user's picture of a database






13. Combination of criteria in which both criteria must be true






14. A file containing a collection of compiled and optimized SQL statements that are available for future use






15. A two-dimensional table-style collection of data in which all entries are single-valued - each column has a distinct name and all the values in a column are values of the attribute that is identified by the column name - and the order of the columns






16. A function used to calculate the number of entries and the sum or average of all the entries in a given column or the largest or smallest of the entries in a given column






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






18. A question the answer to which is found in the database






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






20. A file used to store data about a single entity. Such a file can be thought of as a table.






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






22. A function used to calculate the number of entries and the sum or average of all the entries in a given column or the largest or smallest of the entries in a given column






23. 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.






24. The SQL clause that is used to enforce legal-values integrity






25. In Access the query that updates the contents of a table






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






27. The part of an SQL SELECT command that indicates grouping






28. A Characteristic or property of an entity






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






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






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






32. The property that lets you change the structure of a database without requiring you to change the programs that access the database






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






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






35. 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






36. 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.






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






38. The rule that if table A contains a foreign key that matches the primary key of table B then the value of this foreign key must either match the value of the primary key for some row in table B or be null






39. The property that no record can exist in the database with a value in a field other than a legal value






40. A person or place or object or event or idea for which you want to store and process data






41. An index built on a single field






42. The SQL command used to make changes to existing table data






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






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






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






46. 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.






47. A collection of relations






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






49. The individual who is responsible for a database or the head of database administration






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