Exam 9: Database Management Systems

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A deadlock is a phenomenon that prevents the processing of transactions.

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Which statement is correct?

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What are the characteristics of a properly designed relational database table?

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What are the key control implications of the absence of database normalization?

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All of the following are basic data management tasks except

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Timestamping is a control that is used to ensure database partitioning.

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Use the following words to complete the sentences. database administrator data dictionary data redundancy index sequential access method query language schema sequential structure subschema -_________________________ occurs when a specific file is reproduced for each user who needs access to the file.

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

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

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What is the insertion anomaly?

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Which of the following is not a common form of conceptual database model?

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Explain the basic results that come from the restrict,project,and join functions.

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Which of the following is a level of the database that is defined by the data definition language?

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Logical database design is the foundation of the conceptual design.

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All of the following are advantages of a partitioned database except

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In a distributed data processing system,a database can be centralized or distributed.What are the options? Explain.

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Replicated databases create considerable data redundancy,which is in conflict with the database concept.Explain the justification of this approach.

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A table is in second normal form when it is

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Under the database approach,data is viewed as proprietary or owned by users.

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The physical database is an abstract representation of the database.

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