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






2. The plural of Criterion






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






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






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






6. 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






7. A Characteristic or property of an entity






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






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






10. The part of an SQL SELECT command that indicates the condition rows must satisfy to be displayed in the query results






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






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






13. 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






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






15. 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






16. 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






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






18. 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






19. What type of an operator is >= ?






20. A characteristic or property of an entity






21. The most common form of a join






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






23. 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






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






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






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






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






28. 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.






29. 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






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






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






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






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






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






35. An index built on a single field






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






37. What type of an operator is >= ?






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






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






40. 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






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






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






43. A characteristic or property of an entity






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






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






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






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






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






49. An association between entities






50. A characteristic or property of an entity