MIS Exam 3

8 September 2022
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A _____ acts as an interface to a database, retrieving data for users and allowing users to enter data in the database.
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data-driven website
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A _____ is usually a smaller version of a data warehouse, used by a single department or function.
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data mart
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A__________converts logical requests from users into their physical equivalents by interacting with other components of the database management system (DBMS).
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database engine
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For each database, there:
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is only one physical view of data
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In a relational database, every record must be uniquely identified by a__________.
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primary key
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In comparison with a flat file system, _____ in a database.
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storage space is reduced
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In data warehouses, _____ is information about data—its content, quality, condition, origin, and other characteristics.
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metadata
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In the context of how information is viewed in a database, the _____ involves how data is stored on and retrieved from storage media.
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physical view
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In the context of segmentation of customers in database marketing,__________is a variable that includes gender, age, income, and marital status.
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demographic information
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The _____ dimension of big data refers to the sheer quantity of transactions, measured in petabytes or exabytes.
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volume
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The _____ stores data types for fields, default values for fields, and validation rules for data in each field.
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data dictionary
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Which of the following is a key factor that has contributed to the growth and popularity of big data?
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mobile and wireless technology
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Which of the following is an advantage of a database over a flat file system?
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Programs and data are interdependent in a database.
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Which of the following statements is true of big data?
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It is the result of the exponential growth of data in both public and private organizations.
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Labor and population statistics are examples of sources for internal data that are accessed by a database.
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False
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Each column in an Access table datasheet represents a ____.
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field
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Each row in an Access table datasheet displays which of the following?
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a record
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The specific content of a field is referred to as the ____.
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field value
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A database or a relational database is a collection of related tables.
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true
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Each record in a table is uniquely identified by a foreign key.
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false
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Access does not require a table to have a(n) primary key.
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true
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All fields in a database should be contained in one table.
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false
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Data redundancy should be avoided because it wastes storage space and might cause inconsistencies within the database.
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true
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In order to define table relationships, each table being joined must contain a common field.
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true
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A _______ Excel workbook tracks the changes made by different people so everyone can examine when and where each change was made.
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shared
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Marking a workbook as final makes the workbook _______, discouraging a user from making any changes to it.
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read-only
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_____ is concerned with issues such as political repercussions of using an information system and meeting the requirements of the Information Privacy Act.
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legal feasibility
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_____ is concerned with whether a new system can be completed on time.
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scheduling feasibility
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_____ uses an iterative process that repeats the design, development, and testing steps as needed, based on feedback from users.
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rapid application development (RAD)
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__________are small-scale versions of information systems, which are built before building the entire system, and are used to illustrate the system's benefits and allow users to offer feedback.
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prototypes
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During the _____ of the systems development life cycle (SDLC), an information system is operating, enhancements and modifications to the system have been developed and tested, and hardware and software components have been added or replaced.
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maintenance phase
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During the__________of the systems development life cycle (SDLC), a team assesses how a system is working and takes steps to keep the system up and running.
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maintenance phase
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In _____ of the implementation phase of the systems development life cycle (SDLC), as each module of a new system is converted, the corresponding part of an old system is retired.
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phased-in-phased-out conversion
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In _____ of the implementation phase of the systems development life cycle (SDLC), the old and new systems run simultaneously for a short time to ensure the new system works correctly.
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parallel conversion
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In the context of the planning phase of the systems development life cycle (SDLC), which of the following is an example of an internally identified problem in information systems?
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management voicing concern about the organization's lack of a competitive edge in the marketplace.
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In the design phase of the systems development life cycle (SDLC), the _____ indicates hardware and software, such as specifying Linux servers and Windows clients.
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logical design
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The end result of the__________of the systems development life cycle (SDLC) model should give users and top management a clear view of what the problem is and how the information system will solve the problem.
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planning phase
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Which of the following is categorized as a tangible benefit of an information system?
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increased company profits
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One of the advantages of prototyping is that modifying a prototype is easier than modifying a complete system.
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false
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A _____ acts as an interface to a database, retrieving data for users and allowing users to enter data in the database.
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data-driven website
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Business analytics uses _____ to gain insight into data and provide decision makers with information they can act on.
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predictive modeling
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In a relational database model, a(n) _____ pares down a table by eliminating columns according to certain criteria.
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project operation
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The _____ component of a database management system (DBMS) is used to add, delete, modify, and retrieve records from a database.
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data manipulation
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The variety dimension of big data refers to the combination of _____.
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structured and unstructured data
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The use of the OR operator in a query form, when using query by example (QBE), means that only one of the conditions must be met.
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true