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What are the three classes of SQL expression?
SQL expression consists of three clauses:
Select
From
Where
FDs in Relationships: Enrols Relationship: None as it is many to many Teaches Relationship : Course code → Instructor Instructor → Course code The next question is:
Why Like predicate used for? LIKE predicate: The LIKE predicate searches for strings in which have a certain pattern.
he SQL query that will return the order number, quantity ordered, price each and total cost of an order (quantity * price each) from the order details table. Label the calculated c
If R1 and R2 are two relations or functions, then the result of R3 = R1 × R2 is the combination of tuples that are in R1 and R2. The product is associative and commutative. Degr
#question.explain diversity and magnitude of organic compounds and general properties?
explain in detail about time stamp orderting/
Consider the relation schemas as follows. works (person name, company name, salary); lives (person name, street, city); located in(company name, city); managers (person name
Inconsistent Analysis : The problem as given with transactions T1 and T2 where two transactions interleave to make incorrect result during an analysis by Audit is the instance of s
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
Dependency Preservation It is obvious that the decomposition must be lossless so that we do not lose any information from the relation that is decomposed. Dependency preservati
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