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Define in which normalisation form if an attribute of a composite key is dependent on an attribute of other composite key.
Ans: 3NF
A relation is in 3 NF if an attribute of a composite key is relies on an attribute of other composite key. (If an attribute of a composite key is relies upon an attribute of other composite key then the relation is not in BCNF, therefore it has to be decomposed.)
From SAD to OOAD (Structured Analysis and Design (SAD) to Object Oriented Analysis and Design (OOAD). We will find here how we can map various models in SAD to different model
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Explain Candidate key? Candidate Key - A candidate key is a minimal superkey, that can be used to uniquely identify a tuple in the relation.
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List and explain the memory constructs of the Oracle 12c databases?
Describe the types of Inheritance 1. Single inheritance 2. Multiple inheritance 3. Hierarchical inheritance 4. Multilevel inheritance
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