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






2. A database has integrity if the data in it satisfies all established integrity constraints






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






4. The column on which two tables are joined






5. A combination of two tables consisting of all records that are in either table






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






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






8. A screen object you use to maintain or view and print data from a database






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






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






11. A query that deletes all records that satisfy some criterion






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






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






14. A minimal collection of columns (attributes) in a table on which all columns are functionally dependent and that is chosen as the main direct-access vehicle to individual rows.






15. An index built on a single field






16. The rule that no column (attribute) that is part of the primary key may accept null values






17. A screen object you use to maintain or view and print data from a database






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






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






20. The column on which two tables are joined






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






22. The prevention of unauthorized access to a database






23. 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






24. A rule in Access that data entered in a field must satisfy






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






26. A characteristic or property of an entity






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






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






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






30. In Access the query that updates the contents of a table






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






32. An index built on a single field






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






34. The part of an SQL SELECT command that indicates grouping






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






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






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






38. The SQL command used to make changes to existing table data






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






40. The relational algebra command used to select columns from a table






41. A Characteristic or property of an entity






42. The SQL command used to delete a table






43. The individual who is responsible for a database or the head of database administration






44. An action that automatically occurs in response to an associated database operation such as INSERT or UPDATE or DELETE






45. The SQL command used to describe the layout of a table. The word table is followed by the name of the table to be created and then by the names and data types of the column (fields) that comprise the table






46. A question the answer to which is found in the database






47. 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






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






49. The SQL command that creates an index in a table






50. 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