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 central repository for databases across an entire enterprise.






2. The horizontal bar at the top of a column. You can click a column selector to select the entire column in the query design grid or the filter design grid






3. Two or more controls that can be treated as one unit while designing a form or report. You can select the group instead of selecting each individual control as you are arranging controls or assigning properties.






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






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






6. Candidate key selected for use.






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






8. 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.






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






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






11. 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.






12. Dependency where determinant determines a list of values.






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






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






15. 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






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






17. 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.






18. 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.






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






20. An attribute utilized to sort and/or identify data in some manner. Each table should have a primary key which uniquely identifies records.






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






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






23. Attribute that determines the value of another attribute.






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






25. Table has no anomalies.






26. 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






27. 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.






28. 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.






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






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






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






32. Functional dependency involving only non-key attributes.






33. 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).






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






35. 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.






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






37. a.k.a record






38. 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.






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






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






41. When a relation is not just in Boyce-Codd Normal Form - but also contains at most one multivalued dependency.






42. A data model in which the data is organized into a tree-like structure. The structure allows representing information using parent/child relationships: each parent can have many children - but each child has only one parent






43. A relation that contains no multivalued attributes.






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






45. Knowingly violates one or more rules of normalization.






46. A database computer language designed for the retrieval and management of data in relational database management systems (RDBMS) - database schema creation and modification - and database object access control management.






47. 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.






48. 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.






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






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







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