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






2. A structure that contains information about the objects (tables or columns or indexes or views and so on) in a database






3. 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






4. In relational algebra the operation in which two tables are connected on the basis of common data.






5. 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






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






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






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






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






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






11. The field on which data are sorted






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






13. An index built on a single field






14. When comparing tables the set of all rows that are in the first table but that are not in the second table






15. 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






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






17. A collection of relations






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






19. The prevention of unauthorized access to a database






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






21. 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






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






23. The portion of the system catalog the contains column information






24. More than one entry at a single location in a table






25. The relational algebra command for performing the intersection of two tables






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 the tables in the query






28. The relational algebra command for performing the difference of two tables






29. 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.






30. An index built on more than one field






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






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






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






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






35. A file that relates key values to records that contain those key values






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






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






38. A statement the can be either true or false. Also called a condition






39. A collection of relations






40. The relational algebra command that combines tables and searches for rows in the first table that match all rows in the second table






41. The table obtained by concatenating every row in the first table with every row in the second table






42. An association between entities






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






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






45. The rule that no column (attribute) that is part of the primary key may accept null values






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






47. The part of an SQL SELECT command that restricts the groups to be displayed






48. A characteristic or property of an entity






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






50. The SQL statement that is used to revoke privileges from users of a database