Exam 9: Database Management Systems

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In a hierarchical model

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To the user,data processing procedures for routine transactions,such as entering sales orders,appear to be identical in the database environment and in the traditional environment.

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The deletion anomaly is the least important of the problems affecting unnormalized databases.

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List the steps involved in creating a relational database using a top-down approach.

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The update anomaly in unnormalized databases

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Which statement is false?

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Each of the following is a relational algebra function except

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What is the partitioned database approach and what are its advantages?

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Users access the database

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Use the following words to complete the sentences. Use the following words to complete the sentences.   -The __________________________ describes every data element in the database. -The __________________________ describes every data element in the database.

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Use the following words to complete the sentences. Use the following words to complete the sentences.   -The ____________________ allows users to retrieve and modify data easily. -The ____________________ allows users to retrieve and modify data easily.

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What is the normal cardinality between a Customer entity and a Sales order entity? What does it signify? Why is it the only logical cardinality?

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Discuss the hierarchical database model.What limitation(s)of the hierarchical database model are solved by the network database model?

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Use the following words to complete the sentences. Use the following words to complete the sentences.   -_________________________ occurs when a specific file is reproduced for each user who needs access to the file. -_________________________ occurs when a specific file is reproduced for each user who needs access to the file.

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A user view

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Use the following words to complete the sentences. Use the following words to complete the sentences.   -The conceptual view of the database is often called ____________________. -The conceptual view of the database is often called ____________________.

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What is repeating group data?

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Which of the following is not one of four interrelated components of the database concept?

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Discuss the accountant's role in data modeling and potential problems caused by anomalies.

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Explain the three types of anomalies associated with database tables that have not been normalized.

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