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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 relational algebra command used to select columns from a table






2. A view that consists of a subset of the rows and columns in a table






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






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






5. A condition that involves only a single field and a single value






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






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






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






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






10. 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






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. A word that is part of the SQL language






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






14. 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.






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






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






17. The SQL command used to delete a table






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






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






20. The SQL statement that is used to grant different types of privileges to users of a dataabase






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






22. 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






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






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






25. What type of an operator is >= ?






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






27. A characteristic or property of an entity






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






29. A characteristic or property of an entity






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






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






32. An index built on more than one field






33. A collection of relations






34. An association between entities






35. The prevention of unauthorized access to a database






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






37. The column on which two tables are joined






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






39. 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






40. A collection of relations






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






42. The prevention of unauthorized access to a database






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






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






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






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






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






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






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






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







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Can you answer 50 questions in 15 minutes?


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