ISA 387 Chapter 5 Quiz | Verified with 100% Correct Answers
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Module
ISA 387
Institution
ISA 387
ISA 387 Chapter 5 Quiz | Verified with 100% Correct Answers Among the symbols in the accompanying figure, a _____ receives input data and produces output that has a different content, form, or both. data flow gray hole process data store In a data flow diagram (DFD), systems analysts call an ent...
Among the symbols in the accompanying figure, a _____ receives input data and
produces output that has a different content, form, or both.
data flow
gray hole
process
data store
In a data flow diagram (DFD), systems analysts call an entity that receives data from the
system a source.
True
False
Data stores are shown in a context diagram because data stores are external to the
system.
False
True
In a data dictionary, _____ is the maximum number of characters for an alphabetic or
character data element or the maximum number of digits and number of decimal
positions for a numeric data element.
length
domain
valence
index
On lower-level diagrams with multiple processes, there should not be more than nine
process symbols.
False
True
In a data flow diagram (DFD), a process symbol can have only one outgoing data flow.
False
True
A data flow diagram shows the detailed contents of a data store.
False
True
, Balancing _____.
ensures that the input and output data flows of the child data flow diagram (DFD) are
maintained on the parent data flow diagram (DFD)
ensures that the input and output data flows of the parent data flow diagram (DFD) are
maintained on the child data flow diagram (DFD)
uses a series of increasingly detailed data flow diagrams (DFDs) to describe an
information system
uses a series of increasingly sketchy data flow diagrams (DFDs) to describe an
information system
Deciding whether to explode a process further or determine that it is a functional
primitive is a matter of experience, judgment, and interaction with programmers who
must translate the logical design into code.
True
False
Among the symbols in the accompanying figure, a _____ is used to represent data that
a system stores because one or more processes need to use the data at a later time.
gray hole
process
data flow
data store
A _____ is a central storehouse of information about a system's data.
data mart
data repository
data feed
data cube
In a data flow diagram (DFD), the Gane and Sarson symbol for a data flow is a _____.
segment of a differentiable curve
line with a single or double arrowhead
triangle, which may be shaded to make it look three-dimensional
flat rectangle that is open on the right side and closed on the left side
Processes contain the business logic, also called business rules, which transforms the
data and produces the required results.
False
True
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