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. When sorting on two fields - the less important field






3. The most common form of a join






4. A file containing a collection of compiled and optimized SQL statements that are available for future use






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






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






7. A data manipulation language for relational databases in which users indicate the action to be taken by completing on-screen forms






8. A characteristic or property of an entity






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






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






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






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






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






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






15. 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






16. 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






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






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






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






20. A characteristic or property of an entity






21. A word that is part of the SQL language






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






23. A punctuation mark - such as a semicolon - that separates pieces of data






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






25. A characteristic or property of an entity






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






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






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






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






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






31. 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.






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






33. 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






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






35. 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






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






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






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






39. The column on which two tables are joined






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






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






42. An index built on a single field






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






44. 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






45. An association between entities






46. What type of an operator is >= ?






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






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






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






50. An index built on more than one field