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 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.






2. Two simple criteria in a query the are combined with the AND or OR operators






3. 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






4. 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






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






6. The field or fields on which an index is built






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






8. A combination of criteria in which at least on the criteria must be true






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






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






11. A computer that provides services to the clients in a client/server system






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






13. A characteristic or property of an entity






14. An association between entities






15. The prevention of unauthorized access to a database






16. A combination of criteria in which at least on the criteria must be true






17. A characteristic or property of an entity






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






19. The individual or group that is responsible for a database






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






21. 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






22. The prevention of unauthorized access to a database






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






24. The rule that if table A contains a foreign key that matches the primary key of table B then the value of this foreign key must either match the value of the primary key for some row in table B or be null






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






26. The most common form of a join






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






28. A characteristic or property of an entity






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






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






31. The portion of the system catalog that contains table information






32. A collection of relations






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






34. Combination of criteria in which both criteria must be true






35. Two simple criteria in a query the are combined with the AND or OR operators






36. The individual or group that is responsible for a database






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






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






39. A data value meaning "unknown" or "not applicable"






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






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






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






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






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






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






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






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






48. 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






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






50. The property that no record can exist in the database with a value in a field other than a legal value