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Exam 4: Documenting Information Systems

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Question 41

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The advantage of a physical data flow diagram (DFD) versus a logical data flow diagram (DFD) is that we can concentrate on what activities a system is performing without having to specify how, where or by whom.

A) True
B) False

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Question 42

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Adams, Inc. customers mail their orders to the Adams customer service center where clerks open the orders and review them for accuracy. The clerks then key orders into the computer. As the clerk is entering data the computer populates the order input screen with data from the applicable customer and inventory master data. The computer displays the completed order and the clerk reviews the order (assume there are no discrepancies) and then accepts the order (selects the "save" icon on the input screen). The computer then creates a sales order master record, updates the inventory master data to allocate inventory to the sales order, prints a picking ticket in the warehouse, and displays the sales order number to the customer service center clerk. The clerk then reads this number to the customer. Required: a. Prepare an annotated table of entities and activities. Indicate on this table the groupings-bubble numbers and bubble titles-to be used in preparing the level 0 logical data flow diagram. b. Prepare a logical data flow diagram (level 0 only). The context diagram of this billing system shows two external entities: customers and the shipping department. c. Prepare a systems flowchart.

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Question 43

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A symbol used in data flow diagrams (DFDs) to depict an entity or process within which incoming data flows are transformed into outgoing data flows is a(n) :

Which of the following segments violates guidelines for creating systems flowcharts? a. b. c. d.

A person, place, or thing within a system that transforms data is called:

The following symbol represents a disk data store

A data flow diagram (DFD) is a graphical representation of a system, which depicts the system's components, data flows and the sources, destinations and storage of data.

The following systems flowchart segment depicts a data entry clerk keying data from a source document into a business event data store. Which statement is correct?

In a logical data flow diagram (DFD) for a cash receipts system, each of the following labels might appear in a bubble except:

Which data flow diagram (DFD) symbol is usually portrayed with a square?

Which of the following data flow diagram (DFD) symbols is represented by two parallel lines?

The successive subdividing, or exploding, of logical data flow diagrams (DFDs) is called ______________________________.

In drawing a context diagram, we should include:

Data leaving for outside a system is depicted on a data flow diagram (DFD) as going to a(n) ______________________________ entity.

On a systems flowchart a rectangle represents a(n) ________________.

In a systems flowchart, two parallel lines represent the data store symbol.

Internal entities do not perform any information processing activities.

Systems documentation is used to understand, explain, evaluate, and improve complex business processes, information systems, and internal controls.

In a data flow diagram, a square represents a source or destination of data outside the system.

A(n) ______________________________ is a person, place, or thing within the system that transforms data.