Test your basic knowledge |

Database Management

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 combination of attributes that can be used to uniquely identify a database record. Candidate keys are a special subset of super keys that do not have any extraneous information in them






2. Functional dependency involving only non-key attributes.






3. No partial functional-dependencies.






4. A question about the data stored in your tables - or a request to perform an action on the data. A query can bring together data from multiple tables to serve as the source of data for a form. report or data access page.






5. A DBMS created by Microsoft - it is a collection of data and objects - such as tables - queries - or forms - related to a particular topic or purpose.






6. Many-to-many relationships occur when each record in TableA may have 0 - 1 or many linked records in TableB and vice-versa.






7. When a table is not only in 1NF but each non key field is functionally dependent on the full primary key






8. Attribute that determines the value of another attribute.






9. A function such as sum - count or average that you use to include summary data in a report.






10. An association/link established between common fields in two different tables. A relationship can be one-to-one - many-to-many or more usually one-to-many.






11. The persons or things that a database table is about.






12. A way of looking at a database object - usually looking at the design or at the contents/results






13. A graphical representation of any portion of a database scheme.






14. A value that may be assigned to an attribute when no other value applies or when the applicable value is unknown.






15. Table has no anomalies.






16. An operator used to compare two values or expressions; For example - < (less than) - > (greater than) - = (equal to)






17. An action query that adds the records in a query's result set to the end of an existing table.






18. A primary key that is comprised of more than one field.






19. A database object that stores data in records and fields. The data is usually about a particular category of things.






20. A database object on which you place controls for entering - displaying and editing records in a table.






21. A graphical representation of all entity relationships (Data Model)






22. A link between two or more tables.






23. A database object that prints information formatted and organised according to your specifications.






24. The part of an SQL statement that specifies which record to retrieve.






25. A collection of fields that together describe one entity.






26. The actual pieces of facts that are stored in the fields in a database table.






27. A graphical representation of entities and their relationship to each other - typically used in computing in regard to the organization of data within databases or information systems






28. A query ( SQL statement ) that creates a new table and then creates records in it by coping records from an existing table.






29. A query that displays a summary calculation - such as an average or a sum - for values in a table or tables. A totals query is not a seperate kind of query; rather it extends the flexibility of select queries.






30. A table which is not only in 2NF but whose non-primary key fields are dependent only on the primary key and therefore have no dependence on (relationship to) any other non-primary key field in the table.






31. A value that is automatically entered in a field or control when you add a new record.






32. The set of fields in a table which stores unique values and so any one from the list can be selected to be the primary key.






33. Knowingly violates one or more rules of normalization.






34. The components of a data abase i.e. tables - queries - forms - reports - pages - macros and modules.






35. The DBMS language component used to create - alter and destroy databases and database objects i.e. schemas - tables - views - sequences - catalogs - indexes - and aliases.






36. An MS Access tool that simplifies a task. For example - you can quickly create a complex expression with the Expression Builder.






37. Relations which allow you to retrieve related records from the same table.






38. Dependency where determinant determines a list of values.






39. No Transitive Dependencies.






40. A data type that is used for fields and calculations involving money






41. A candidate key that coud have been the primary key but was not selected as such ; OR a field that is not the primary key but has been used for indexing nevertheless.






42. This is a property of data which - when satisfied - requires every value of one field (attribute) of a table to exist as a value of another field in another related table.






43. An association between two tables in which the primary key value of each record in the primary table corresponds to the value in the matching field or fields of one and only one record in the related table.






44. A record as seen in the data sheet view.






45. A Key composed of more than one attribute.






46. A field in a table with unique values that although it is not the primary key - it could have been used as such.






47. A central repository for databases across an entire enterprise.






48. Refers to the number of associations that can exist between two record types.






49. A self-describing collection of integrated tables. The tables are called integrated because they store data about the relationships between the rows of data.






50. A characteristic of the items in a database i.e. a field