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