Q. Which of the following ensures that no duplicate values are inserted in a column?

निम्नलिखित में से कौन यह सुनिश्चित करता है कि किसी कॉलम में कोई डुप्लिकेट मान नहीं डाला गया है?

A
Primary Key
B
Foreign Key
C
Index
D
View

Explanation

Explanation will be available soon. Please stay tuned.

व्याख्या जल्द ही उपलब्ध होगी। कृपया बने रहें।

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