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what factors might influence a company to outsource its IT infrascture.
data models are being replaced over years. Reasons and why does that happen?
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
What do you mean by an execution plan? Why is it used? How will you view it? a.) An execution plan can be known as a road map which textually or graphically illustrates the dat
Describe an data dictionary? A data dictionary is a data structure which keeps meta data about the structure of the database ie. the schema of the database.
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
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.
Operator Precedence The basic operators used in SQL are * / - + Operators of the similar priority are evaluated From Left to right Parentheses are used to force priorit
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
define anomalies and different types of anomalies with example
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