Terms in this set (40)
In data and process modeling, a(n) ____ model shows what the system must do, regardless of how it will be implemented physically.
DFD symbols are referenced by using all ____ letters for the symbol name.
A DFD shows ____.
all of the above
In a DFD, the Gane and Sarson symbol for a process is a ____.
rectangle with rounded corners
In a DFD, the Gane and Sarson symbol for a data flow is a ____.
line with a single or double arrowhead
A spontaneous generation process is a process that has ____.
A black hole process is a process that has ____.
A gray hole process is a process that has ____.
at least one input and one output, but the input obviously is insufficient to generate the output shown
____ is/are logically impossible in a DFD because a process must act on input, shown by an incoming data flow, and produce output, represented by an outgoing data flow.
All of the above
In a DFD, the Gane and Sarson symbol for a data store is a ____.
flat rectangle that is open on the right side and closed on the left side
In a DFD, the Gane and Sarson symbol for an entity is a ____.
rectangle, which may be shaded to make it look three-dimensional
If processes must be performed in a specific sequence, you document the information in the ____.
Because diagram 0 is a(n) ____ version of process 0, it shows considerably more detail than a context diagram.
uses a series of increasingly detailed DFDs to describe an information system
____ is the process of drawing a series of increasingly detailed DFDs, until all functional primitives are identified.
____ maintains consistency among DFDs by ensuring that input and output data flows align properly.
Using ____, an analyst starts with an overall view, which is a context diagram with a single process symbol, and then the analyst creates diagram 0, which shows more detail.
ensures that the input and output data flows of the parent DFD are maintained on the child DFD
A data ____ is a central storehouse of information about a system's data.
In a data dictionary, a(n) ____ is the smallest piece of data that has meaning within an information system.
In a data dictionary, data elements are combined into ____, which are meaningful combinations of data elements that are included in data flows or retained in data stores.
The data dictionary usually records and describes a default value, which is the ____.
value for the data element if a value otherwise is not entered for it
In a data dictionary, any name other than the standard data element name is called a(n) ____.
In a data dictionary, ____ refers to whether the data element contains numeric, alphabetic, or character values.
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.
A data dictionary specifies a data element's ____, which is the set of values permitted for the data element.
In a data dictionary, some data elements have ____ rules, such as an employee's salary must be within the range defined for the employee's job classification.
____ is based on combinations of the three logical structures, or control structures (one of which is shown in the accompanying figure), which serve as building blocks for the process.
In the accompanying figure, the sequence structure is the completion of ____.
steps in a chronological order, one after another
The selection structure is the completion of ____.
one or more process steps based on the results of a test or condition
Typical process description tools include all of the following EXCEPT ____.
A ____ description documents the details of a functional primitive, which represents a specific set of processing steps and business logic.
The iteration structure is the completion of ____.
a process step that is repeated until a specific condition changes
Structured English might look familiar to programming students because it resembles ____, which is used in program design.
____ also is called looping.
A(n) ____ table shows a logical structure, with all possible combinations of conditions and resulting actions.
Decision trees show the logic structure in a ____.
horizontal form that resembles a tree with the roots at the left and the branches to the right
A decision ____ is a graphical representation of the conditions, actions, and rules found in a decision table.
The major benefit of ____ is that it gives a clear picture of current system functions before any modifications or improvements are made.
the four-model approach
The disadvantage of the four-model approach is ____.
the added time and cost needed to develop a logical and physical model of the current system
YOU MIGHT ALSO LIKE...
Academic Word Lists - AWL Sublists
Systems Analysis Test 2
System Analysis Chapter 5
System analysis and design Ch 5
OTHER SETS BY THIS CREATOR
THIS SET IS OFTEN IN FOLDERS WITH...
Systems Ch. 3
Systems Ch. 6
CNIT 180 FINAL EXAM !