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Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF.
Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relation R, either:
While
3NF: For each functional dependency X->Y in a set F of functional dependencies over relation R, either:
a. there is no subset of a key is a key
What are the different approaches for database design? There are two basic approaches for database design which are as follows: Attribute driven: It compiles a list of att
Explain data abstraction? Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is
A relation instance indicates as r is a collection of tuples for a given relational schema at a exact point of time. A relation state r of the relation schema R (A 1 ,A 2 ,.....
Differentiate OO development from structured development. Structured approach of problem solving is based upon the idea of decomposition of system into subsystem. In this appro
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
Explain Candidate Key and Super Key A super key is a set of one or more than attributes that, taken collectively, permits us to identify uniquely a tuple in the relation. Wher
explain thee diffrent types of data models
can you create a database for me in oracle/sql
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