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Compute the closure (F+) for the following set of the functional dependencies defined on R(a,b,c,d), where F - {c→a, ab→d, a→b, d→c}, i.e. what are all of the FDs implied by F (Hint; there's 24 of them).
Have database built but having problems with some questions that go with the database
as a customer service employee explain five measures you would recommend to make even a displeased students patronize the school canteen
Question 1 Discuss the classification of DBMS based on location of database Question 2 Explain with examples different SQL commands used for creating and deleting relations.
Consider the following six relation schemes and their corresponding sets of functional dependencies. In each case identify a. All the candidate keys b. The highest normal for
#what is cursor its uses ? Explain it
explain normalisation
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
Describe integrity and security? a) Domain constraint b) Referential integrity A value that appears in one relation for a given set of attributes also appear fo
An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A
We want have a website; we need to test the security of our website. You need to: -Try to bypass our security by simulate a website hacking -Try some hack Techniques like
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