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Define the Canonical cover Ans: A canonical cover F c for F is a set of dependencies like F logically implies all dependencies in F c , and F c logically entails all dependen
For each 1: n relationship type R involving two entities E1 and E2, we recognize the entity type (say E1) at the n-side of the relationship type R and contain primary key of the en
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
What is DML (Data Manipulation Language)? This language that enable user to access or manipulate data as organised by appropriate data model. Procedural DML or Low level: DM
what is Nested relational model? Explain with examples.
What benefits can a company gain by managing its own information infrastructure and servicea
What is Foreign Key Foreign Key: Sometimes we may have to work with an attribute that does not have a primary key of its own. To recognize its rows, we have to use the primar
what is stracture of dabms
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
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