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 characteristic or property of an entity






2. An index built on more than one field






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






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






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






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






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






8. The plural of Criterion






9. A characteristic or property of an entity






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






11. The SQL command used to delete a table






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






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






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






15. 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






16. The part of an SQL SELECT command that indicates the condition rows must satisfy to be displayed in the query results






17. A characteristic or property of an entity






18. 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






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






20. 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






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






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






23. 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






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






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






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






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






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






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






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






31. 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






32. 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






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






34. What type of an operator is >= ?






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






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






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






38. The SQL clause that is used in a CREATE TABLE or ALTER TABLE command to set a table's primary key field(s)






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






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






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






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






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






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






45. 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






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






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






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






49. The part of an SQL SELECT command that indicates the tables in the query






50. An index built on more than one field