Systems Analysis Test 2 Quiz Questions – Flashcards
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True or False: Prototyping is best applied late in the systems development life cycle.
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False
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T/F: Prototyping may be used as a replacement for the systems development life cycle.
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True
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T/F: One reason that prototyping is useful is that user requirements are likely to change over time.
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True
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An advantage of prototyping is that systems will be more thoroughly understood before the system is shaped.
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False
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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 "breadboarding"?
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patched-up prototyping
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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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During the RAD design workshop:
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users respond to actual working prototypes and analysts refine designed modules based on the responses
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Which of the following is a disadvantage of RAD?
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the project may not have any documentation
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What are the reasons for why some analysts argue that prototyping should be considered an alternative to the SDLC?
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SDLC takes too long and user requirements change over time.
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What are the 4 kinds of prototyping?
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1. patched-up 2. nonoperational 3. first of a series 4. selected features
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T/F: An arrow is used to depict an external entity that can give and receive data from the system.
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False
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T/F: Processes that transform data should be named with a noun which indicates the data that has been transformed.
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False
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Which graphically characterize(s) processes and data flows through a business system?
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data flow diagrams
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What is the middle of the process symbol used for?
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process description
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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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Partitioning on a data flow diagram for an ecommerece Web site may be used to show:
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security
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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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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 works
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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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T/F: Data about data is called metadata.
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True
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T/F: A data dictionary contains information about data flow diagram, but not entities or use cases.
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False
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T/F: An alias for each element is another name for the data used by different users in different systems.
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True
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T/F: The ideal data dictionary is automated, interactive, online, and evolutionary.
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True
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What is a reference work of data about data compiled by systems analysts?
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data dictionary
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A data flow that contains data that are used between processes is called:
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internal
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A synonym or other name for an element is called a(n):
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alias
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Since a single data flow may only show part of the collective data,
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many data flow may have to be examined to determine the contents of a data store
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The data dictionary may be used to create;
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screens, reports, forms (all of the above)
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T/F: Data flow is usually the first component to be stored in the data dictionary.
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True
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Which is NOT related to conventional files?
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Files will remain a practical way to store data for some applications.
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Which is an advantage of the database approach?
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It allows users their own view of the data
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Which is incorrect about reality, data, and metadata?
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There are data item occurrences with the realm of files
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What type of entity is used to represent repeating groups?
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attributive entity
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What is a collection of data items that have something in common with the entity?
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a record
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What is defined any data item in a record that is used to identify the record?
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key
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What can be constructed by choosing two or more data items and combining them?
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concatenated key
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Transaction files:
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are used to update master files and produce reports
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Which of the following is true when implementing a one-to-many relationship?
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the file on the MANY end has a FOREIGN key consisting of the PRIMARY key on the ONE end.
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Each master file should have programs to:
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update master file records, read and process records form the master file, add new records, delete master file records (ALL OF THE ABOVE)
