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 feature that speeds up searching and sorting in a table based on key values and can enforce uniqueness on the rows of a table.






2. A referential integrity constraint is a statement that limits the values of the foreign key to those already existing as primary key values in the corresponding table.






3. A relation that contains no multivalued attributes.






4. One (or more fields) in a table that refer to the primary key in another table.






5. Dependency where determinant determines a list of values.






6. A query that asks a question about the data stored in your tables and returns a results set in the form of a data sheet without changing the actual data in the table(s).






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






8. A type of computer file system that stores all data in a single file.






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






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






11. A normalization which falls between 3NF and 4NF and involves the elimination of non-trivial dependencies






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






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






14. 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.






15. Data from a table - form - query which is displayed in a row-and-column format.






16. DBMS (Database Management System) statements used to manage data (tables and other objects) within a database






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






18. Arrange the records in a view set in order according to a particular field






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






20. Stored procedures that may be configured to automatically execute (fire) when certain events take place.






21. A control that indicates whether an option is selected or not. A tick mark appears in the box when the option is selected.






22. A field - set up in a query - that displays the result of an evaluated expression rather than displaying stored data.The value of the calculated field is re-calculated each time a value in the expression changes.






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






24. The process of examining and analyzing data with a view to extracting patterns from it. It is usually done on data warehouses






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






26. Data about data.






27. To modify a database - or the files associated with the database.






28. Guidelines set in place to ensure the trustworthiness of data over its entire life cycle.






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






30. A link between two or more tables.






31. 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






32. The process of organizing data to minimize redundancy and produce smaller - well-structured relations/tables.






33. A section of a record containing data relating to one single characteristic of an entity; also called an attribute






34. A characteristic of a field that determines what kind of data it can store and what type of operations can be performed on it.






35. Knowingly violates one or more rules of normalization.






36. 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 of0 - 1 - or many records in the related table.






37. The window that appears when you open an Access database or an Access project. It displays the commands for creating new database objects and opening and manipulating existing objects.






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






39. The dominant database model






40. A query that removes records which match the criteria you specify from one or more tables






41. That structure which contains description of objects created by a user - such as base tables - views and constraints - as a part of a database.






42. Functional dependency involving only non-key attributes.






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






44. Groups of database commands which are to be treated as a single atomic event.






45. 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.






46. A field data type that automatically stores a unique number for each record as it is added to a table.






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






48. This is an exact numeric data type that holds from 10^38 - 1 through 10^38 - 1.






49. A query that copies data or changes data in some way. This includes append - delete - make-table and update queries.






50. Table has no anomalies.