Exam 7: Data Flow Diagramming

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.How many data stores will be shown in CWM's Level Zero data flow diagram?

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.Which of the following pairs an element from the case with an appropriate symbol in a data flow diagram of the case?

Refer to the illustrations below as you answer the next question: Suppose the partial flowchart was converted to one of the data flow diagrams illustrated. Which of the following statements is most true?

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 stores clients' information electronically. The database file would be represented in a data flow diagram with a(n):

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. Suppose the database includes four tables; in which table would you expect to find a field titled "quantity sold?"

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. Which of the following statements about the Level Zero data flow diagram is most true?

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. Which of the following is most likely to be the name of Process 1.0?

Please refer to the data flow diagram below in answering the next question: Which of the following statements about the data flow diagram is most true?

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. Create specifications (table names and field names) for three tables the theatre would need to track ticket sales; if a junction table is indicated, you must include its specifications as one of the three.

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. If the database includes a sales / inventory junction table, its primary key is most likely to be:

Suppose a leveled set of data flow diagrams incorporates the levels indicated below. Specify how processes would be numbered at each level.

Determine which of the following statements are: (a) correct for systems flowcharts only, (b) correct for data flow diagrams only, (c)correct for both or (d) correct for neither. 1) Can be prepared using information technology tools 2) Clearly specifies responsibility for business processes 3) Commonly thought of as the one best way to represent an AIS 4) Incorporates verb phrases to label processes 5) Labels data flows between processes 6) May span multiple pages 7) Processes can be represented with different types of symbols 8) Represents processes with a single symbol type 9) Should be uncluttered and easy to read 10) Uses a symbol to represent a database

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.Assume CWM wants no more than three processes shown on its Level Zero data flow diagram. All of the following are likely to be processes except:

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.Data flow diagrams incorporate four symbols. Which of the following pairs of items would be represented with the same symbol in a DFD of the case?

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. The database is likely to contain all of the following tables except:

Data flow diagrams can be used in which of the following steps of the systems development life cycle: (i) requirements analysis, (ii) design, (iii) implementation.

Fill in the blanks below based on the rules / conventions associated with data flow diagrams presented in the text. A. A data store has a ___ phrase label. B. A process has a ___ phrase label. C. No process can have only ___. If an object has only ___, it must be a data store. D. No process can have only ___. If an object has only ___, then it must be an external entity. E. The ___ to a process should differ from the outputs of a process.

Please refer to the data flow diagram below in answering the next question: In the next level of data flow diagrams:

Refer to the illustrations below as you answer the next question: If the partial flowchart were converted to a data flow diagram, which of the following would most closely represent it?