Exam 3: Database Systems,data Warehouses,and Data Marts

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Labor and population statistics are sources of internal data that are accessed by a database.

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Disks are sequential access devices,whereas tapes are random access devices.

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The _____ of a data model defines the boundaries of a database,such as maximum and minimum values allowed for a field.

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A database administrator is responsible for developing recovery procedures in case data is lost or corrupted.

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In a relational model,when a primary key for one table appears in another table,it is called a _____ key.

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The advantage of _____ is that both sequential and random access can be used,depending on the situation and the user's needs.

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Data in a database is used for analytical purposes,whereas data in a data warehouse is used for capturing and managing transactions.

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In a(n) _____ file structure,records can be accessed in any order,regardless of their physical location in storage media.

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Explain the transformation processes used in data warehouses.

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To begin designing a relational database,one must define the _____ by defining each table and the fields in it.

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Which of the following is a source of external data?

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In contrast to the query languages used to interact with a relational database,interaction with an object-oriented database takes places via methods.

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Which of the following statements is true of data marts and data warehouses?

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In well-designed data-driven Web sites,changes are made to the HTML code every time a Web site's data content changes.

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What is a data-driven Web site?

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Which of the following data sources provides the input a data warehouse needs to perform analyses and generate reports?

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For each database,there can be more than one physical view of data.

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Describe the tasks performed in the first normal form (1NF) stage of normalization.

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In large organizations,database design and management is handled by the _____.

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The _____ component of a database management system (DBMS) is used for tasks such as backup and recovery,security,and change management.

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