CH5CHO – Flashcards

In data and process modeling, a(n) ____ model shows what the system must do, regardless of how it will be implemented physically. a. operational c. logical b. physical d. relational

DFD symbols are referenced by using all ____ letters for the symbol name. a. capital c. italicized b. lowercase d. boldfaced

A DFD shows ____. a. what the system does b. how data moves through an information system c. how a system transforms input data into useful information d. all of the above

In a DFD, the Gane and Sarson symbol for a process is a ____. a. rectangle with rounded corners b. line with a single or double arrowhead c. flat rectangle that is open on the right side and closed on the left side d. rectangle, which may be shaded to make it look three-dimensional

In a DFD, the Gane and Sarson symbol for a data flow is a ____. a. rectangle with rounded corners b. line with a single or double arrowhead c. flat rectangle that is open on the right side and closed on the left side d. rectangle, which may be shaded to make it look three-dimensional

A spontaneous generation process is a process that has ____. a. no input b. at least one output and one input, but the output obviously is insufficient to generate the input shown c. no output d. at least one input and one output, but the input obviously is insufficient to generate the output shown

A black hole process is a process that has ____. a. no input b. at least one output and one input, but the output obviously is insufficient to generate the input shown c. no output d. at least one input and one output, but the input obviously is insufficient to generate the output shown

A gray hole process is a process that has ____. a. no input b. at least one output and one input, but the output obviously is insufficient to generate the input shown c. no output d. 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. a. Spontaneous generation c. Black holes b. Gray holes d. All of the above

In a DFD, the Gane and Sarson symbol for a data store is a ____. a. rectangle with rounded corners b. line with a single or double arrowhead c. flat rectangle that is open on the right side and closed on the left side d. rectangle, which may be shaded to make it look three-dimensional

In a DFD, the Gane and Sarson symbol for an entity is a ____. a. rectangle with rounded corners b. line with a single or double arrowhead c. flat rectangle that is open on the right side and closed on the left side d. 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 ____. a. leveling guide c. data dictionary b. process descriptions d. DFD

Because diagram 0 is a(n) ____ version of process 0, it shows considerably more detail than a context diagram. a. contracted c. condensed b. exploded d. extrapolated

Leveling ____. a. uses a series of increasingly detailed DFDs to de-scribe an information system b. ensures that the input and output data flows of the parent DFD are maintained on the child DFD c. uses a series of increasingly sketchy DFDs to de-scribe an information system d. ensures that the input and output data flows of the child DFD are maintained on the parent DFD

____ is the process of drawing a series of increasingly detailed DFDs, until all functional primitives are identified. a. Leveling c. Indexing b. Balancing d. Exploding

____ maintains consistency among DFDs by ensuring that input and output data flows align properly. a. Balancing c. Leveling b. Indexing d. Exploding

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. a. balancing c. exploding b. indexing d. leveling

Balancing ____. a. uses a series of increasingly detailed DFDs to de-scribe an information system b. ensures that the input and output data flows of the parent DFD are maintained on the child DFD c. uses a series of increasingly sketchy DFDs to de-scribe an information system d. ensures that the input and output data flows of the child DFD are maintained on the parent DFD

A data ____ is a central storehouse of information about a system's data. a. glossary c. content bank b. knowledgebase d. repository

In a data dictionary, a(n) ____ is the smallest piece of data that has meaning within an infor-mation system. a. field c. record b. index d. pixel

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. a. fields c. records b. columns d. decimals

The data dictionary usually records and describes a default value, which is the ____. a. specification of the set of values permitted for the data element b. identification of the user(s) responsible for chang-ing values for the data element c. specification for the origination point for the data element's value d. 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) ____. a. clone c. alias b. cipher d. index

In a data dictionary, ____ refers to whether the data element contains numeric, alphabetic, or character values. a. value c. valence b. type d. domain

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. domain c. length b. valence d. index

A data dictionary specifies a data element's ____, which is the set of values permitted for the data element. a. range c. array b. domain d. any of the above

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. a. domain c. validity b. range d. mastered

____ 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. a. Modular design c. Global design b. General design d. Total design

In the accompanying figure, the sequence structure is the completion of ____. a. one or more process steps based on the results of a test or condition b. steps in a chronological order, one after another c. a process step that is repeated until a specific con-dition changes d. a specific condition that is repeated until a process changes

The selection structure is the completion of ____. a. one or more process steps based on the results of a test or condition b. steps in a chronological order, one after another c. a process step that is repeated until a specific con-dition changes d. a specific condition that is repeated until a process changes

Typical process description tools include all of the following EXCEPT ____. a. context diagrams c. structured English b. decision trees d. decision tables

A ____ description documents the details of a functional primitive, which represents a specific set of processing steps and business logic. a. logic c. process b. primitive d. function-based

The iteration structure is the completion of ____. a. one or more process steps based on the results of a test or condition b. steps in a chronological order, one after another c. a process step that is repeated until a specific con-dition changes d. a specific condition that is repeated until a process changes

Structured English might look familiar to programming students because it resembles ____, which is used in program design. a. pseudocode c. iterative code b. a decision tree d. decision code

____ also is called looping. a. Sequence c. Iteration b. Selection d. All of the above

A(n) ____ table shows a logical structure, with all possible combinations of conditions and resulting actions. a. pseudo c. decision b. logic d. validity

Decision trees show the logic structure in a ____. a. vertical form that resembles a tree with the roots at the bottom and the branches at the top b. horizontal form that resembles a tree with the roots at the left and the branches to the right c. vertical form that resembles a tree with the roots at the top and the branches at the bottom d. horizontal form that resembles a tree with the roots at the right and the branches to the left

A decision ____ is a graphical representation of the conditions, actions, and rules found in a decision table. a. base c. icon b. tree d. index

The major benefit of ____ is that it gives a clear picture of current system functions before any modifications or improvements are made. a. the four-model approach c. leveling b. balancing d. both b and c

The disadvantage of the four-model approach is ____. a. it gives an unclear picture of the current system functions before any modifications or improve-ments are made b. the requirements of a new information system always are different from the current information system c. the added time and cost needed to develop a logi-cal and physical model of the current system d. all of the above

Typical process description tools include ____. a. context diagrams c. pseudocode b. decision trees d. database tables

Evan is an expert on all of the different kinds of process description tools, so when his colleagues have questions, they know where to turn. 1. One of the firm's beginner analysts is working on a financial process that will continue to print vendor payments until it reaches the end of the file. Which of the following processes will Evan suggest that the analyst use? a. sequence b. selection c. concatenation d. iteration

Another of the firm's analysts has been pounding his head against his desk for 10 minutes because he cannot figure out what is wrong with some structured English he has been using to describe the processing logic. Evan walks over and spots the problem in an instant. Which of the following can be what Evan identifies as the problem? a. The structured English is indented. b. The structured English is not using a sequence, selection, or iteration structure. c. The structured English uses a limited vocabulary. d. The structured English is used as a shorthand notation for actual code by programmers

The analysts at Novel Systems Worldwide are considering the four-model approach to system development for a new client. 3. Which of the following will NOT be developed if they decide to use the four-model approach? a. A physical model of the current system. b. A logical model of the current system. c. A teleological model of the current system. d. A physical model of the new system.

If they pursue the four-model approach, which of the following is a likely outcome? a. Users will be unhappy. b. Costs may be high. c. It will not be possible to get a clear picture of the current system functions before modifications are made. d. Costs may be low.

A DFD shows ____. a. how data are related b. what key fields are stored in the system c. how a system transforms input data into useful information d. what data is stored in the system

____ 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. a. Spontaneous combustion c. Black holes b. Gray matter d. Black boxes