Exam 4: Relational Databases

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Describe the different schemas involved in a database structure.What is the role of accountants in development of schemas?

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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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Which of the following would not be found in a data dictionary entry for a data item?

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Using the database depicted below,how many foreign keys are in the database? Using the database depicted below,how many foreign keys are in the database?

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Explain the two advantages semantic data modeling has over normalization when designing a relational database.

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Ama Afolayan is chair of the National Owl Society,which maintains a database of all rare owls within the United States.One table will store the name,birth date,and other characteristics of all of the owls that have been registered.Each owl is uniquely identified by a registration number.A second table will contain data that link each owl to its male and female parents by means of their registration numbers.The entities described by the second table are

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A low-level view of the database that describes how the data are actually stored and accessed is the

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Inability to add new data to a database without violating the basic integrity of the database is referred to as the

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When the human resources manager wants to gather data about salary and start date by employees and by departments,the manager would use which language?

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Cornelia Cassidy is a telecom equipment sales representative.Her company has provided her with a laptop computer that uses wireless connectivity to access the accounting information system from virtually anywhere in the country.She has access to view customer and product information.She also has access that allows her to enter and cancel customer orders.The permissions for Cornelia (and other sales reps)define a ________ in the company's database management system.

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Describe a data dictionary.

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The ________ is responsible for the database.

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Explain the types of attributes that tables possess in a relational database.

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Databases were originally developed to address which problem?

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Kai Keoni has created custom statues made out of scrap metal for over ten years.He lives above his shop in Martha's Vineyard,Maryland.Kai is an accounting fanatic and has kept detailed records of every statue he has ever created.For every sale,he obtains the customer's name and address,a description of the statue,and a picture of the statue sold to the customer.His unique style has recently attracted the attention of several celebrities.Ready to take his business to the next level,Kai has hired you to construct an accounting information system,which he wants modeled after his paper records.As you look over his records,you realize that sometimes the same customer is recorded by a slightly different name.For example,Mike Mulligan bought a horse statue,M.Mulligan bought a pig statue,and Mike M.all seem to be the same person.This is an example of what type of problem in the existing records?

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Which of the following would not be true about the well-structured tables in a well-designed relational database used to generate this sales invoice? Which of the following would not be true about the well-structured tables in a well-designed relational database used to generate this sales invoice?

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Ama Afolayan is chair of the National Owl Society,which maintains a database of all rare owls within the United States.One table will store the name,birth date,and other characteristics of all of the owls that have been registered.Each owl is uniquely identified by a registration number.A second table will contain data that link each owl to its male and female parents by means of their registration numbers.The primary key in the second table is

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Kekoa Konani is chairman of the Chatty Chihuahua Club,where he maintains a database of registered purebred Chihuahuas and their breeding history.One table will store the name,birth date,and other characteristics of all of the registered Chihuahuas.Each Chihuahua is uniquely identified by a registration number.A second table will contain data that link each Chihuahua to its male and female parents by means of their registration numbers.The primary key in the first table is

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Ama Afolayan is chair of the National Owl Society,which maintains a database of all rare owls within the United States.One table will store the name,birth date,and other characteristics of all of the owls that have been registered.Each owl is uniquely identified by a registration number.A second table will contain data that link each owl to its male and female parents by means of their registration numbers.The primary key in the first table is

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In the database design approach known as normalization,the first assumption made about data is

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