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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
random file sharing
How does a query tree represent a relational algebra expression? Discuss any three rules for query optimisation, giving example as to when should each rule be applied. Ans
State the Steps of Object Design Object design is a very iterative process in which various classes, relationships among objects are added when you move from one level to
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
Greater potential for bugs: Since the sites of a distributed system operate simultaneously, it is more complex to ensure the correctness of algorithms. The art of constructing dis
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
What is hash file organization? What are the causes of bucket overflow within a hash file organization? What can be completed to decrease the occurrence of bucket overflow?
What is E-R model? This data model is based on real world that having of basic objects called entities and of relationship between these objects. Entities are explained in a da
Explain the dependency relationship of object oriented A dependency is a relationship which states that a change in specification of one thing can affect another thing, but n
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