Ch 6+7 Modeling EXAM Flashcards
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Which prototype includes only some, but not all, of the components of the final system?
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selected features prototype
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Which kind of prototyping is most similar to what engineers call "bread boarding"?
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patched-up prototype
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A patched-up prototype is likely to be:
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inefficient.
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Which of these is a potential disadvantage of prototyping?
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shapes systems before problem is thoroughly understood
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Which of these is not a guideline for developing a prototype?
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Build the system slowly and carefully.
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Which of these is not an advantage of prototyping?
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buffers users against computer malfunctioning
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Which of these is not a way users can be expected to help in prototyping?
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providing the necessary technical expertise for interfacing with the database
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The agile approach is based on:
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All of the above.
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Systems that require constant updating and technical design are prone to which kind of error?
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miscommunication
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Which of the following is not one of the four values of agile modeling?
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technical skill
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Which of the following is not a basic activity of agile development?
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documenting
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Which of the following can be used to communicate ideas that would otherwise remain fuzzy or unshaped?
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coding
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When doing pair programming which person(s) chooses a partner programmer?
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the programmers
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In agile development ________ are on spoken interaction between developers and users not on written communication.
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stories
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Which of the following is a core practice of the agile approach?
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A 40-hour work week.
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Which of the following statements is not a principle of agile modeling?
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"Code for tomorrow."
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Which of the following is not a component of the Scrum methodology?
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spring
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Based on their study of a group of programmers, the best programmers are ________ times more productive than the worst ones.
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five to ten
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Making all product release deadlines imminent:
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pushes a realistic expectation for completion to the fore.
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It has been noted that dividing up groups and setting up barriers often introduces:
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errors.
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Building a ________ of information systems is a useful technique for quickly gathering information requirements.
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prototype
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A system that has all necessary features but is inefficient is an example of a ________ prototype.
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patched-up
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A regional blood inventory system that is instituted in one regional hospital with plans to install the system in the remaining hospitals is an example of a ________ prototype.
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first-of-series
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A system for which only input and output are prototyped is called a ________.
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nonoperational
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An example of ________ prototyping is building the first airplane of a series and then seeing if it flies before building a second.
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first-of-series
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An example of ________ prototyping is building a full-scale model of an automobile that is used in wind tunnel tests.
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nonoperational
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An example of ________ prototyping is programming a working model that has all the necessary features but is inefficient.
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patched-up
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One distinct advantage of prototyping is that it is not necessary or desirable to build ________ for prototype purposes.
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an entire working system
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An advantage of prototyping is tied to the fact that user ________ change over time.
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requirements
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The first step of prototyping is to estimate the ________ involved for building system modules.
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costs
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When prototyping, it is essential that analysts work in ________ modules.
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manageable
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________ software, such as Microsoft products or PeopleSoft may be used for prototyping.
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COTS
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Users' roles in prototyping can be summed up in two words: honest ________.
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involvement
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It is the responsibility of the ________ to translate suggestions and innovations into workable systems.
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analyst
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In the agile approach, ________ is determined by listening to customers and getting them to write down their stories.
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scope
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Which graphically characterize(s) data processes and flows through a business system?
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data flow diagrams
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Which is the biggest advantage of the data flow approach over narrative explanations?
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conceptual freedom found in the use of the four symbols
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Which is not one of the four basic symbols used to chart data movement on data flow diagrams?
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an oval
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What is the middle of the process symbol used for?
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process description
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A primitive process is:
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a process that is not exploded to a child diagram.
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Which of the following is not an error when drawing a data flow diagram?
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data flow on a child diagram that has only one end connected to a process, the other end is a point in space
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When the data flow in and out of a parent process do not match the data flow in or out of a child diagram, it is called:
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unbalanced decomposition.
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A logical data flow diagram:
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is a model of how the business operates.
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Which of the following is not an advantage of using a logical model?
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A logical model clarifies which processes are automated.
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Which of the following is not an advantage of using a physical model?
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It is easier to create compared with the logical model.
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Physical data flow diagrams:
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include processes for adding, updating, changing and deleting records.
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Transaction files:
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may be used to link processes that execute at different times.
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Which of the following is not a reason for partitioning processes into separate programs?
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to maintain consistency of data
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A CRUD matrix is used to show:
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where records are updated, added, deleted or used.
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In a CRUD matrix, each row represents the data stores used for each:
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activity.
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The process of creating a simple data flow diagram fragment for each unique system trigger is called:
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event modeling.
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The advantage of building data flow diagrams based on events is that:
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users are familiar with the events within their business and know how the events drive other activities.
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A use case:
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summarizes an activity, its trigger, input, and output.
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Partitioning on a data flow diagram for an ecommerce Web site may be used to show:
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security.
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Which of the following is a goal of dividing a Web site into a series of Web pages?
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improve the ease of maintaining the Web site
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What should be created each time data must be obtained from an external partner?
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a unique Web form and DFD process to validate and process the data
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Ajax is used to:
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obtain data from a Web server and update the current Web form.
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Having separate Web forms to collect transaction data means that:
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the forms are less complex and easier to fill out.
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Each time an external company or system is involved:
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the process involved needs to be partitioned into a separate program.
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Which of these are reasons for partitioning a system?
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to keep transactions secure
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A method that provides conceptional freedom for representing processes and flows in a business system is the ________.
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data flow diagram
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________ depict the broadest possible overview of system inputs, processes, and outputs.
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Data flow diagrams.
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By using combinations of only four symbols, the systems analyst is able to create a pictorial depiction of data flows that eventually can provide solid system ________.
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documentation
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The data flow approach enables the systems analyst to better understand the interrelatedness of ________ and ________.
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systems; subsystems
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An external entity is called a source or ________ of data, and is considered to be external to the study.
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destination
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Data flows occurring simultaneously can be depicted doing just that through the use of ________ arrows.
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parallel
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The data store symbol is simply showing a depository for data which allows addition or ________ of data.
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retrieval
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With a ________ approach, the diagrams move from general to specific.
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top-down
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While the first ________ diagram helps the systems analyst grasp basic data movement, its general nature limits its usefulness.
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context
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When the first ________ diagram is made, inputs and outputs are specified and these remain constant throughout all of the following diagrams.
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context
