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Properties of a Transaction
A transaction has four main properties. These are:
cardnality ratio for humanresource mangement system
a publishing company produce scientific books on various subjects. the books are written by authors who specialize in one particular subject. the company employs editors who, not n
What are the three data anomalies that are similarly to take place as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why n
PART MARKING: We will only mark TWO of the four questions below but you must submit answers to all four. We will choose the questions we mark randomly and we will supply you with
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
What is an entity relationship model? The entity relationship model is a set of basic objects known as entities and relationship between those objects. An entity is a thing or
What is Normalization? Database normalization is a data design and organization method applied to data structures based on rules that help building relational databases. In rel
Design a gennalization and specialization hierarchy for an automobile sales company
#what is cursor its uses ? Explain it
What are the two methods for dealing deadlock problem? The two procedures for dealing deadlock problem is deadlock detection and deadlock recovery.
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