What is a primary key? Are duplicate primary keys allowed? Why or why not?
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1 Primary key is an unique key which is used to identify or fetch record uniquely from a relation or ...View the full answer
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Sudeep goli
I have completed my graduation in 2019 and I'm very confident on computer science fundamentals, I used to teach when I'm studying ,roughly 7 months of teaching experience as of now. I take simple examples related to daily life to make the concepts clear and more understandable.
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Systems analysis and design in a changing world
ISBN: 978-1423902287
5th edition
Authors: John W. Satzinger, Robert B. Jackson, Stephen D. Burd
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