| 31. | In the relational models, cardinality is termed as: |
| a. | Number of tuples |
| b. | Number of attributes |
| c. | Number of table |
| d. | Number of constraints |
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Answer: (a).Number of tuples
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| 32. | In a relational model, relations are termed as |
| a. | Tuples |
| b. | Attributes |
| c. | Rows |
| d. | Tables |
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Answer: (d).Tables
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| 33. | A relational database developer refers to a record as |
| a. | a criteria |
| b. | a relation |
| c. | a tuple |
| d. | an attribute |
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Answer: (c).a tuple
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| 34. | The relational model feature is that there |
| a. | is no need for primary key data |
| b. | is much more data independence than some other database models |
| c. | are explicit relationships among records |
| d. | are tables with many dimensions |
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Answer: (b).is much more data independence than some other database models
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| 35. | Key to represent relationship between tables is called |
| a. | Primary key |
| b. | Secondary Key |
| c. | Foreign Key |
| d. | None of these |
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Answer: (c).Foreign Key
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| 36. | In a relation |
| a. | Ordering of rows is immaterial |
| b. | No two rows are identical |
| c. | a and b both are true |
| d. | None of these |
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Answer: (c).a and b both are true
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| 37. | The RDBMS terminology for a row is |
| a. | tuple |
| b. | relation |
| c. | attribute |
| d. | degree |
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Answer: (a).tuple
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| 38. | Which of the operations constitute a basic set of operations for manipulating relational data? |
| a. | Predicate calculus |
| b. | Relational calculus |
| c. | Relational algebra |
| d. | None of the above |
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Answer: (c).Relational algebra
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| 39. | A primary key is combined with a foreign key creates |
| a. | Parent-Child relation ship between the tables that connect them |
| b. | Many to many relationship between the tables that connect them |
| c. | Network model between the tables that connect them |
| d. | None of the above |
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Answer: (a).Parent-Child relation ship between the tables that connect them
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| 40. | A primary key if combined with a foreign key creates |
| a. | Parent-Child relationship between the tables that connect them |
| b. | Many to many relationship between the tables that connect them |
| c. | Network model between the tables that connect them |
| d. | None of the above |
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Answer: (a).Parent-Child relationship between the tables that connect them
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