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Data Flow Diagram (Dfd) With Complete Solutions Latest Update
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Data Flow Diagram (Dfd) With Complete Solutions Latest Update
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Data Flow Diagram (Dfd) With CompleteSolutions Latest Update
What are the 4 key component in process modeling - correct answers 1)External
entities: outside data sources/sink
2)Data store: data at rest
3)Data flow: data in motion
4)Processing logic
Process Oriented Approach - correct answers Focuses on how and when data are
moved and changed
-involves graphical representation: data flow diagram
-data tracked from sources, through intermediate steps/final destination
Data vs. Information - correct answers Data are raw facts; information is data
converted into a meaningful & useful context for decision making
Data flow - correct answers group of data that moves through system
-includes description of sources/ destination for each data
-data in motion, moving from one place in system to another
Data store - correct answers Data at rest, which may take the form of many
different physical representations
, Processing logic - correct answers represents the way in which data are
transformed
-work or action performed on data so that they are transformed, store, and
destination
source/sink(external entities) - correct answers outside sources, give or get
information
-origin or destination of data, sometime referred to as external entities
Process Modeling - correct answers graphically representing the processes that
capture, manipulate, store, and distribute information between a system and its
environment
Data Flow Diagram (DFD) - correct answers a graphical description of the flow of
data within an organization, including data sources/destinations, data flows,
transformation processes, and data storage
Decomposition or factoring - correct answers -the process of breaking down into
smaller components
-break system into small manageable subsystem
-focus on one area at a time
-concentrate on component pertinent to one group of user
-build different component at an independent time
Data dictionary - correct answers -complete set of definition
a)process, data store, data flow
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