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 data value meaning "unknown" or "not applicable"






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






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






4. The area of memory in MySQL that stores the most recently entered command






5. The process of creating collections of records that share some common characteristics






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






7. An association between entities






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






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






10. A graphic model for database design in which entities are represented as rectangles and relationships are represented as either arrows or diamonds connected to the entities they relate






11. The part of an SQL SELECT command that restricts the groups to be displayed






12. The prevention of unauthorized access to a database






13. 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






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






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






16. A file containing a collection of compiled and optimized SQL statements that are available for future use






17. The SQL command used to add new data to a table






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






19. The SQL clause that is used to enforce legal-values integrity






20. The column on which two tables are joined






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






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






23. A characteristic or property of an entity






24. A characteristic or property of an entity






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






26. 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






27. A Characteristic or property of an entity






28. A delete option in which related records are automatically deleted






29. An access tool that provides documentation about the objects in a database






30. 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.






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






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






33. A data manipulation language for relational databases in which users indicate the action to be taken by completing on-screen forms






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






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






36. The field on which data are sorted






37. 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






38. The most common form of a join






39. The SQL command used to delete a table






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






41. The combination of two or more rows in an operation - such as a join - or the combination of two or more columns for a primary key field to uniquely identify a given row in a table






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






43. The SQL statement that is used to revoke privileges from users of a database






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






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






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






48. The relational algebra command for performing the intersection of two tables






49. A condition that involves only a single field and a single value






50. An index built on more than one field