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






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






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






4. The combination of two or more rows in an operation - such as a join - or the combination of two or more columns for a primary key field to uniquely identify a given row in a table






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






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. A query that deletes all records that satisfy some criterion






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






9. An association between entities






10. A structure that satisfies the properties required to be a relation with the exception of allowing repeating groups






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






12. An index built on more than one field






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






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






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






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






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






18. The process of arranging rows in a table or results of a query in a particular order






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






20. The process of arranging rows in a table or results of a query in a particular order






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






22. An instruction by a user that directs a database to perform a certain way






23. A collection of relations






24. A collection of relations






25. The SQL command used to delete a table






26. The combination of two or more rows in an operation - such as a join - or the combination of two or more columns for a primary key field to uniquely identify a given row in a table






27. An index built on more than one field






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






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






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






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






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






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






34. A program or a collection of programs through which users interact with a database






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






36. A characteristic or property of an entity






37. Two tables are union compatible if they have the same number of fields and if their corresponding fields have identical data types






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






39. The column on which two tables are joined






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






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






42. 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






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






44. 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






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






46. A structure that satisfies the properties required to be a relation with the exception of allowing repeating groups






47. 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






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






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






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