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






2. 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






3. The portion of the system catalog the contains column information






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






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






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






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






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






9. The prevention of unauthorized access to a database






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






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






12. 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






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






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






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






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






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






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






19. 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






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






21. A characteristic or property of an entity






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






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






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






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






26. A Characteristic or property of an entity






27. A structure that can store information about multiple types of entities - the attributes of these entities and the relationships among those entities






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






29. The SQL command that is used to change the structure of a table






30. The prevention of unauthorized access to a database






31. 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






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






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






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






35. A structure that can store information about multiple types of entities - the attributes of these entities and the relationships among those entities






36. 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






37. 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.






38. 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






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






40. The prevention of unauthorized access to a database






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






42. The column on which two tables are joined






43. A characteristic or property of an entity






44. An update option in which related records are automatically updated






45. 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






46. Two tables are union compatible if they have the same number of fields and if their corresponding fields have identical data types






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






48. 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






49. A characteristic or property of an entity






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