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What will be create when a primary key if combined with a foreign key?
A primary key if combined with a foreign key it creates Parent-Child relationship between the tables that connect them.
About Attribute inheritance
#A multinational tour operator agency has gained new business growth in the North American market through the use of social media. Its operation has expanded by 50% within six mont
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
recovey techniques based on deferred update and immediate update
Consider the join of a relation R with relation S. If R has m tuples and S has n tuples, then the maximum size of join is: If R has m tuples and S has n tuples then maximum siz
Differentiate OO development from structured development. Structured approach of problem solving is based upon the idea of decomposition of system into subsystem. In this appro
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
sql is relationally complete-justify
Describe the advantage of State chart Diagram A state chart represents a state machine, emphasizing flow of control from one state to other. A state machine is a behaviour whi
FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
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