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 field whose value is computed from other fields in the database






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






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






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






5. A characteristic or property of an entity






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






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






8. An association between entities






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






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






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






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






13. The prevention of unauthorized access to a database






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






15. The field on which data are sorted






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






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






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






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






20. A computer that provides services to the clients in a client/server system






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






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






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






24. 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






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






26. The plural of Criterion






27. 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






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






29. A Characteristic or property of an entity






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






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






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






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






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






35. The prevention of unauthorized access to a database






36. A word that is part of the SQL language






37. A delete option in which related records are automatically deleted






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






39. The most common form of a join






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






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






42. A collection of relations






43. 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






44. What type of an operator is >= ?






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






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






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






48. An action that automatically occurs in response to an associated database operation such as INSERT or UPDATE or DELETE






49. A column (attribute) or collection of columns in a table whose value is required either to match the value of a primary key in a table or to be null






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