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






2. 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






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






4. 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.






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






6. In an access databse - a window in which you work with tables in design view or datasheet view.






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






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






9. All key attributes defined - attributes depend on key and no repeating groups.






10. A key that consists of 2 or more attributes that uniquely identify an entity occurrence.






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






12. The DML statement used to choose data from a database. The result is stored in a temporary table - called the result-set.






13. 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).






14. An organised pool of related data files which can be easily accessed and managed and that may be used by a number of different application programs






15. The conditional expession that is to be used to select particular data records from a larger set of records.






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






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






18. 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.






19. Table has no anomalies.






20. Dependency where determinant determines a list of values.






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






22. 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.






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






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






25. 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.






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






27. 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.






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






29. No Transitive Dependencies.






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






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






32. 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.






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






34. a.k.a record






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






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






37. No multiple multi-valued dependencies.






38. 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.






39. Specialized engines designed specifically to store objects. Users can interact with objects only through designated methods.






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






41. 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






42. Knowingly violates one or more rules of normalization.






43. A relation that contains no multivalued attributes.






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






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






46. A window that displays the SQL statement for the current query or is used to create a SQL specific query. When you create a query in design view - Access constructs the SQL equivalent in the SQL view.






47. 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.






48. 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.






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






50. 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.