Exam 7: Data Flow Diagramming

Accounting information systems have five generic elements. A data flow diagram would be least helpful for which of the five?

If an accounting information system is documented with a systems flowchart:

Which of the following statements about systems flowcharts and data flow diagrams is most true?

Booksellers of Bufluffia is a small, independent bookstore that both publishes and sells very specialized titles. They currently have about 50 clients; they publish and sell 30 different books at present. The company's management has asked you to create database tables to support their operations. Which table(s) should be in third normal form?

A data flow diagram can be used:

Please refer to the following short case as you respond to the next question: A painter accepts orders for original works from customers in person or via the Internet. Based on the order, the painter creates an initial sketch, which must be approved by the customer; the customer may make changes to the initial sketch. After customer approval, the painter selects appropriate materials and gives the customer a price quote. If the customer accepts the price quote, the painter creates the original work; if not, the project is abandoned. The painter stores data about customers, previous orders and previously completed works in an electronic database.In a data flow diagram of the case, "previously completed works" are most likely to be represented with a:

Please refer to the following short case as you respond to the next question: A painter accepts orders for original works from customers in person or via the Internet. Based on the order, the painter creates an initial sketch, which must be approved by the customer; the customer may make changes to the initial sketch. After customer approval, the painter selects appropriate materials and gives the customer a price quote. If the customer accepts the price quote, the painter creates the original work; if not, the project is abandoned. The painter stores data about customers, previous orders and previously completed works in an electronic database.A data flow diagram of the case includes two circles connected by a line. The three symbols are most likely to be labeled with which of the following?

Please refer to the following case as you answer the next question: Comprehensive Waste Management (CWM) provides trash hauling services for several communities in southern California. When a new client wants to establish service, the client calls the company's main office on the phone. A CWM employee collects the following information from the client: name, street address, city, state, ZIP code, area code, telephone number, e-mail address. The employee gives the new client information regarding regular weekly service dates, special services provided by the company, fees and billing procedures. CWM bills its clients every two months in advance of the service; for example, bills are sent to clients at the beginning of January for the months of January and February. Initially, CWM does all its billing manually; they send out paper bills and collect payment from clients via check. Once service is established, a client can create an online account; the online account provides an option for paperless billing and a separate option for charging a credit card rather than paying with a mailed check. To create an online account, the client creates login credentials (user name and password); they provide their CWM account number (provided on the invoice) and relevant credit card data (type of card, name, billing address, and security code). CWM's database uses the account number to look up the client's original information, then merges the new information with it.CWM's manual billing process will be represented in a data flow diagram with a(n):

Consider the following case as you respond to the next problem: The Festival Theatre produces twelve plays per year. Patrons can buy tickets for a single play; alternatively, they can purchase a season pass for either three plays or six plays. Three-play passes offer a 10% discount from the prices of single tickets; six-play passes, a 25% discount. Since most patrons live within 30 miles of the theatre, all ticket sales are done at the box office only. The theatre has an "open seating" plan, so patrons do not reserve a specific seat at any performance. Single-play purchases must be paid for in cash; season passes can be paid for with cash or major credit card. The Festival Theatre deposits all its cash receipts in the bank daily.Create a Level Zero data flow diagram for the process described in the case.

Several items that might appear in a systems flowchart and / or a data flow diagram are listed below. For each item, draw the symbol you would use to represent it in both forms of systems documentation. If no appropriate symbol exists, use an "X." A. Customer check b. Electronic sales transaction file c. End of a process d. Evaluate credit application e. First National Bank f. Grant credit? g. Inventory master file (digital) h. Paper file of payroll documents i. Sales invoice j. Start of a process

Specify the data flow diagram symbol that would be used to represent each item in the list below. A. Bank b. Check c. Disburse cash d. Inventory master file e. Purchase / inventory file f. Purchase inventory g. Purchase order h. Vendor i. Vendor file j. Vendor invoice

Refer to the Level Zero data flow diagram below and the CWM case in responding to the next question: Comprehensive Waste Management (CWM) provides trash hauling services for several communities in southern California. When a new client wants to establish service, the client calls the company's main office on the phone. A CWM employee collects the following information from the client: name, street address, city, state, ZIP code, area code, telephone number, e-mail address. The employee gives the new client information regarding regular weekly service dates, special services provided by the company, fees and billing procedures. CWM bills its clients every two months in advance of the service; for example, bills are sent to clients at the beginning of January for the months of January and February. Initially, CWM does all its billing manually; they send out paper bills and collect payment from clients via check. Once service is established, a client can create an online account; the online account provides an option for paperless billing and a separate option for charging a credit card rather than paying with a mailed check. To create an online account, the client creates login credentials (user name and password); they provide their CWM account number (provided on the invoice) and relevant credit card data (type of card, name, billing address, and security code). CWM's database uses the account number to look up the client's original information, then merges the new information with it. Based on the Level Zero data flow diagram, which of the following statements about the context diagram is most true?

A line in a data flow diagram represents:

Which of the following is most likely to be represented with a set of parallel lines in a data flow diagram?

Which of the following statements about systems flowcharts and data flow diagrams is most true?

A systems flowchart contains two process symbols, one manual process symbol and one predefined process symbol. If that same system were depicted with a leveled set of data flow diagrams, how many circles would the context diagram have?

Data flow diagrams incorporate four symbols. List the symbols; for each one, give two examples of how it might be used in a DFD.

A circle in a data flow diagram may be labeled similarly to which shape in a systems flowchart?

Please refer to the data flow diagram below in answering the next question: In the next level of data flow diagrams, Process 3.1 is most likely to be labeled: