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






2. An index built on more than one field






3. 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






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






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






6. 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






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






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






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






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






11. The plural of Criterion






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






13. An index built on a single field






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






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






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






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






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






19. 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






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






21. The portion of the system catalog that contains index information






22. An association between entities






23. The form of a join in which all records appear - even if they don't match






24. The SQL clause that is used in a CREATE TABLE or ALTER TABLE command to set a table's primary key field(s)






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






26. 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






27. A source of data - usually stored in hidden database tables - about the types of entities or attributes and relationships in a database






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






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






30. 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






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






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






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






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






35. A characteristic or property of an entity






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






37. A characteristic or property of an entity






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






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






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






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






42. The column on which two tables are joined






43. A characteristic or property of an entity






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






45. A characteristic or property of an entity






46. The plural of Criterion






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






48. 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






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






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