C# and ADO.NET interview questions :- What is the difference between Dataset.clone() and Dataset.copy()?

The answer is the easy , people just get confused by the word clone and copy as they almost mean same things.
Dataset.clone(): The clone function only copies the structure of the dataset, including all schemas, relations, and constraints but it does not copy data.

Dataset.copy(): The copy function copies both the structure and data.

Following is the SQL server interview questions which shows difference between unique key and primary key.




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