ISA 387 Chapter 5 Questions with Correct Answers Graded A+
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 - Answers process
In a data flow diagram (DFD), systems analysts call an entity that receives data from the system a source.
True
False - Answers False
Data stores are shown in a context diagram because data stores are external to the system.
False
True - Answers False
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 - Answers length
On lower-level diagrams with multiple processes, there should not be more than nine process symbols.
False
True - Answers True
In a data flow diagram (DFD), a process symbol can have only one outgoing data flow.
False
True - Answers False
A data flow diagram shows the detailed contents of a data store.
, False
True - Answers False
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 -
Answers ensures that the input and output data flows of the parent data flow diagram (DFD) are
maintained on the child data flow diagram (DFD)
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 - Answers True
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 - Answers data store
A _____ is a central storehouse of information about a system's data.
data mart
data repository
data feed
data cube - Answers data repository
In a data flow diagram (DFD), the Gane and Sarson symbol for a data flow is a _____.
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 - Answers process
In a data flow diagram (DFD), systems analysts call an entity that receives data from the system a source.
True
False - Answers False
Data stores are shown in a context diagram because data stores are external to the system.
False
True - Answers False
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 - Answers length
On lower-level diagrams with multiple processes, there should not be more than nine process symbols.
False
True - Answers True
In a data flow diagram (DFD), a process symbol can have only one outgoing data flow.
False
True - Answers False
A data flow diagram shows the detailed contents of a data store.
, False
True - Answers False
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 -
Answers ensures that the input and output data flows of the parent data flow diagram (DFD) are
maintained on the child data flow diagram (DFD)
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 - Answers True
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 - Answers data store
A _____ is a central storehouse of information about a system's data.
data mart
data repository
data feed
data cube - Answers data repository
In a data flow diagram (DFD), the Gane and Sarson symbol for a data flow is a _____.
