Question: Perhaps the most important data items in any database system
Perhaps the most important data items in any database system are the passwords that control access to the database. Suggest a scheme for the secure storage of passwords.Be sure that your scheme allows the systemto test passwords supplied by users who are attempting to log into the system.
Answer to relevant QuestionsExplain what is meant by repetition of information and inability to represent information. Explain why each of these properties may indicate a bad relationaldatabase design.Explain how functional dependencies can be used to indicate the following:• A one-to-one relationship set exists between entity sets account and customer.• A many-to-one relationship set exists between entity sets ...Using the functional dependencies of Exercise 7.11, compute the canonical cover Fc.Give a loss less-join decomposition into BCNF of schema R of Exercise 7.2.Explain how dangling tuplesmay arise. Explain problems that theymay cause.
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