Exam 4: Relational Databases

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The ________ handles the link between the way data are physically stored and each user's logical view of that data.

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How do users retrieve data stored in a database?

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Using the database depicted above,how many primary keys are in the database?

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What are the basic requirements when logically designing a relational database model?

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Emma Kolb is a system analyst at a manufacturing company located in the Midwest.She has been asked to analyze the company's accounting information system and to recommend cost-effective improvements.After noting that the production and sales departments use database systems that are entirely separated,she recommends that they be combined.Implementation of her recommendation would benefit the company by contributing to data

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The technique of using queries to investigate hypothesized relationships among data is called

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Which one of the following results corresponds to the query below? Which one of the following results corresponds to the query below?

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If a national sales tax were implemented,which language would be used to add a new field in the sales table to track the sales tax due?

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Helen Fume is a recruiter with The Ladders in Nome,Alaska.The Ladders success is largely attributable to its accounting information system.When a client is hired by an employer,Helen creates a record that identifies the employment relationship.Helen follows up on placements by surveying both employers and clients about the employment experience and then entering the results into the AIS.Clients are uniquely identified by social security number.In records that contain client survey data,the social security number is likely to be

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The ________ occurs when more than one occurrence of a specific data item in a database exists.

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File-oriented approaches create problems for organizations because of

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Emma Kolb is a system analyst at a manufacturing company located in the Midwest.She has been asked to analyze the company's accounting information system and to recommend cost-effective improvements.After noting that the same production files have been saved and stored independently on several databases,she recommends that they be stored only once.Implementation of her recommendation would benefit the company by contributing to

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The problem of losing desired information from a database when an unwanted record is purged from the database is referred to as the ________ anomaly.

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