51. In an ER diagram, an entity set is represented by a

1. 1. rectangle

   
   
   

   2. ellipse

   
   
   

   3. diamond box

   
   
   

   4. circle

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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52. An advantage of the database management approach is

1. 1. data is dependent on programs

   
   
   

   2. data redundancy increases

   
   
   

   3. data is integrated and can be accessed by multiple programs

   
   
   

   4. All of the above

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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53. DBMS helps to achieve

1. 1. data independence

   
   
   

   2. centralised control of data

   
   
   

   3. selection of data

   
   
   

   4. Both '1' and '2'

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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54. A set of possible data values is called

1. 1. attribute

   
   
   

   2. degree

   
   
   

   3. tuple

   
   
   

   4. domain

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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55. Which type of database, organised the data in the form of tree with nodes ?

1. 1. Network Database

   
   
   

   2. Hierarchical Database

   
   
   

   3. Relational Database

   
   
   

   4. Multiple Database

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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