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. When sorting on two fields - the less important field






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






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






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






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






6. An association between entities






7. The clause in a SQL CREATE TABLE or ALTER TABLE command that specifies referential integrity






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






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






10. A characteristic or property of an entity






11. 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






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. A statement the can be either true or false. Also called a condition






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






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






16. The field on which data are sorted






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






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






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






20. An index built on a single field






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






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






23. A Characteristic or property of an entity






24. The SQL command that drops (deletes) a table from a database






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






26. 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






27. 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






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






29. A very popular relational data definition and manipulation language that is used in many relational DBMS's






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. A characteristic or property of an entity






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






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






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






35. The query that is used to define the structure of a viewk






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






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






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






39. An index built on more than one field






40. What type of an operator is >= ?






41. 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






42. 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






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






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






45. 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






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






47. The plural of Criterion






48. The portion of the system catalog that contains view information






49. 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






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