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Saving Derived Attributes to Avoid Re-computation As discussed, "redundancy means duplication of exact data". But, if multiple copies of same data are present in the system,
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
Your friend owns and operates a wholesale shoe business with annual revenues of $5 million dollars. His wholesale business specializes in supplying and supporting retailers with sh
WHAT IS DATABASE TECHNOLOGIES
What is disadvantage of multiple inheritances? There is potential ambiguity if the similar variable or method can be inherited from more than one superclass.eg: student class m
What are the aggregate objects in the data dictionary? Views Match codes Lock objects.
Normalize the given relation to 3NF, justifying each step
E-R model uses this symbol to represent weak entity set ? A Doubly outlined rectangle symbol is used to represent weak entity set.
what problems are raised by the database? why is it so controversial? why is data quality an issue?
Explain the function of input controls. Identify four types of input control and explain the function of each. Provide an example of a data integrity error that could occur i
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