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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. A characteristic or property of an entity






2. 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






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






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






5. The most common form of a join






6. 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.






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






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






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






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






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






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






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






14. The SQL command used to delete a table






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






16. An index built on more than one field






17. A very popular relational data definition and manipulation language that is used in many relational DBMS's






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






19. 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






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






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






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






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






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






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






26. An association between entities






27. The column on which two tables are joined






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






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






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






31. 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






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






33. A query in SQL that appears within another






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






35. 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






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






37. An association between entities






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






39. A collection of relations






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






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






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






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






44. A word that is part of the SQL language






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






46. 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






47. A collection of relations






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






49. A collection of relations






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







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