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Choose the correct answerWhich one of the following attribute can be taken as a primary key ?OptionsStreetNameIDDepartment

Question

Choose the correct answer

Which one of the following attribute can be taken as a primary key ?

Options

  • StreetName
  • ID
  • Department
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Solution

To determine which attribute can be taken as a primary key, we need to consider the uniqueness and importance of each option.

  1. StreetName: This attribute represents the name of a street. While street names are unique within a specific area, they may not be unique across different regions. Therefore, StreetName may not be suitable as a primary key.

  2. ID: This attribute typically represents a unique identifier for a record. If each record in the dataset has a unique ID, then it can be a good candidate for a primary key.

  3. Department: This attribute represents a department within an organization. Since multiple departments can exist within an organization, Department may not be unique and therefore may not be suitable as a primary key.

Based on the above analysis, the attribute that can be taken as a primary key is ID.

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