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Question Answer Tutorial - Data Base->Data Base Basics

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Question: Logical design of database is called
Answer: Database Schema
Question: Snapshot of the data in the database at a given instant of time is called
Answer: Database Instance
Question: Which of the following is not Unary operation?
Answer: Union
Question: Which of the following is not binary operation?
Answer: Project
Question: Which of the following is correct regarding Aggregate functions?
Answer: It takes a list of values and return a single valu
es as result
                        
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