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What is Functional Dependency?
A Functional dependency is shown by X Y among two sets of attributes X and Y that are subsets of R specifies a constraint on the possible tuple that can form a relation state r of R. The constraint is for any two tuples t1 and t2 in r if t1[X] = t2[X] then they have t1[Y] = t2[Y]. This means the value of X component of a tuple uniquely verifies the value of component Y.
explain ANSI SPARC architecture
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give some example real life situation where DBMS are most suitable
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
what is union compatable?
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
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