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 question the answer to which is found in the database






2. 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






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






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






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






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






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






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






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






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






11. An index built on more than one field






12. A characteristic or property of an entity






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






14. The prevention of unauthorized access to a database






15. 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






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






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






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






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






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






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






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






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






24. A Characteristic or property of an entity






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






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






27. The SQL command that is used to change the structure of a table






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






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






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






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






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






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






34. The plural of Criterion






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






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






37. The SQL command used to describe the layout of a table. The word table is followed by the name of the table to be created and then by the names and data types of the column (fields) that comprise the table






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






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






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






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






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






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






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






45. An association between entities






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






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






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






49. A characteristic or property of an entity






50. 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