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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. The plural of Criterion






2. 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.






3. An index built on a single field






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






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






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






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






8. 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






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






10. 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






11. The column on which two tables are joined






12. A characteristic or property of an entity






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






14. What type of an operator is >= ?






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






16. A query in SQL that appears within another






17. An association between entities






18. A view that consists of a subset of the rows and columns in a table






19. The SQL command that creates an index in a table






20. A collection of relations






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






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






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






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






25. 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






26. The prevention of unauthorized access to a database






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






28. The SQL command used to add new data to a table






29. A characteristic or property of an entity






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






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






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






33. An index built on more than one field






34. The part of an SQL SELECT command that indicates the columns to be included in the query results






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






36. The SQL command that drops (deletes) a table from a database






37. An association between entities






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






39. The column on which two tables are joined






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






41. 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






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






43. What type of an operator is >= ?






44. 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






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






46. The relational algebra command that combines tables and searches for rows in the first table that match all rows in the second table






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






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






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






50. A word that is part of the SQL language