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






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






3. A rule that must be followed by data in a database






4. The property that lets you change the structure of a database without requiring you to change the programs that access the database






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






6. A Characteristic or property of an entity






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






8. A rule that must be followed by data in a database






9. The SQL clause that is used in a CREATE TABLE or ALTER TABLE command to set a table's primary key field(s)






10. The part of an SQL SELECT command that indicates the columns to be included in the query results






11. A rule that must be followed by data in a database






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






13. 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






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






15. 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






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






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






18. The form of a join in which all records appear - even if they don't match






19. The column on which two tables are joined






20. 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






21. 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






22. The SQL statement that is used to revoke privileges from users of 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. The part of an SQL SELECT command that restricts the groups to be displayed






25. A column (attribute) or collection of columns in a table whose value is required either to match the value of a primary key in a table or to be null






26. The SQL command used to delete a table






27. A relational data manipulation language in which new tables are created from existing tables through the use of a set of operations






28. A function used to calculate the number of entries and the sum or average of all the entries in a given column or the largest or smallest of the entries in a given column






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






30. A collection of relations






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






32. A source of data - usually stored in hidden database tables - about the types of entities or attributes and relationships in a database






33. The field on which data are sorted






34. A person or place or object or event or idea for which you want to store and process data






35. 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






36. The most common form of a join






37. A characteristic or property of an entity






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






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






40. The field on which data are sorted






41. An application program's or an individual user's picture of a database






42. Additional information required by an action in a data macro to complete the action






43. An instruction by a user that directs a database to perform a certain way






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






45. The portion of the system catalog that contains index information






46. A punctuation mark - such as a semicolon - that separates pieces of data






47. A person or place or object or event or idea for which you want to store and process data






48. What type of an operator is >= ?






49. More than one entry at a single location in a table






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