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. The relational algebra command for performing the difference of two tables






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






3. 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






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






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






6. A characteristic or property of an entity






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






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






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






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






11. An instruction by a user that directs a database to perform a certain way






12. The portion of the system catalog the contains column information






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






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






15. An index built on a single field






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






17. The relational algebra command to select rows from a table






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






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






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






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






22. What type of an operator is >= ?






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






24. A collection of relations






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






26. An index built on more than one field






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






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






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






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






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






32. 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






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






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






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






36. A computer that provides services to the clients in a client/server system






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






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






39. The prevention of unauthorized access to a database






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






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






42. The portion of the Query Design window in Access where you enter fields or criteria or sort orders and so on






43. 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






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






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






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






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






49. 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






50. The SQL command that drops (deletes) and index from a table