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






2. A file that relates key values to records that contain those key values






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






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






5. 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






6. The clause in a SQL CREATE TABLE or ALTER TABLE command that specifies referential integrity






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






8. The portion of the system catalog that contains table information






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






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






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






12. 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






13. What type of an operator is >= ?






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






15. 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.






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






17. 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






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






19. 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






20. A data value meaning "unknown" or "not applicable"






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






22. An association between entities






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






24. 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






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






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






27. 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






28. 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






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






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






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






32. 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.






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






34. A characteristic or property of an entity






35. An index built on more than one field






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






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






38. The plural of Criterion






39. A collection of relations






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






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






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






43. Additional information required by an action in a data macro to complete the action






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






45. What type of an operator is >= ?






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






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






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






49. The plural of Criterion






50. The combination of two or more rows in an operation - such as a join - or the combination of two or more columns for a primary key field to uniquely identify a given row in a table