a. an on-page connector.b. an off-page connector.c. an external entity.d. a business process.
2. databases in a data flow diagram are represented by:
a. parallel lines.b. rectangles.c. triangles.d. circles.
3. in a data flow diagram, lines:
a. should not be labeled.b. should be labeled with verb phrases.c. should be labeled with noun phrases.d. should have arrows on both ends.
4. which of the following best describes a difference between data flow diagrams and flowcharts?
a. circles are labeled in dfds, but not in flowcharts.b. lines are labeled in flowcharts, but not in dfds.c. flowcharts cannot span more than one page, while dfds often span more than one page.d. flowcharts are organized in columns; dfds are not.
5. which of the following are concerned with data: (i) data flow diagrams, (ii) flowcharts.
a. i only. b. ii only.c. both i and ii.d neither i nor ii.
6. flowcharts are organized in _____, while dfds are organized in _____.
a. indicate the hardware and software technologies that should be used in an accounting information system.b. can be a first step in making process improvements.c. are necessary first steps in designing databases for an accounting information system.d. are less useful than flowcharts.
8. data flow diagrams:
a. help users understand a system.b. are important forms of internal control in all accounting information systems.c. eliminate the need for data normalization.d. are more useful than flowcharts.
9. data flow diagrams:
a. ensure that accounting information systems function efficiently.b. can indicate the database tables needed for an accounting information system.c. never show internal control weaknesses in the accounting information system.d. give the same information as flowcharts.
10. in a leveled set of data flow diagrams, which of the following shows the least detail?
a. context.b. level zero.c. level one.d. primitive.
11. the processes in a level zero data flow diagram are numbered:
a. 0.1, 0.2 and so on.b. 1.1, 2.1 and so on.c. 1.0, 2.0 and so on.d. 1.1, 1.2 and so on.
12. in a data flow diagram, a(n) ___ process has been decomposed as much as possible.
19. which of the following symbols would you find in a flowchart, but not in a data flow diagram?
a. circle.b. line.c. triangle.d. number.
20. which of the following symbols would you find in a data flow diagram, but not in a flowchart?
a. parallel lines.b. rectangle.c. circle.d. diamond.
21. both dfds and flowcharts are concerned with:
a. information technology.b. documents.c. processing tools.d. data.
22. in designing an accounting information system, a data flow diagram can help with: (i) database construction, (ii) communication.
a. i only.b. ii only.c. both i and ii.d. neither i nor ii.
23. bill and lisa are trying to understand how sales invoices are processed in their client's accounting information system. which of the following would be most helpful?
a. data flow diagram.b. database table specifications.c. financial statements.d. risk/control matrix.
24. a data flow diagram is most likely to reveal: (i) inadequate separation of duties, (ii) process inefficiencies.
a. i only.b. ii only.c. both i and ii.d. neither i nor ii.
25. a data flow diagram contains a single business process called "sales/collection system." which of the following statements is most true?
a. the dfd is a context-level diagram.b. the dfd is not balanced.c. the process is primitive.d. the dfd is a level zero diagram.
26. "customer information" enters a business process in a level zero data flow diagram. for the associated level one diagram to be balanced, "customer information" must:
a. leave the last business process.b. have a different name.c. enter a business process with the same name.d. be an input to the first process on level one.
27. in a leveled set of data flow diagrams, which of the following is most likely to be a primitive process?
a. complete the steps in the accounting cycle.b. approve customer credit.c. process sales transaction.d. retrieve information from inventory database.
28. frank created a "customer table" in his accounting information system database. which of the following is most likely to be the primary key in the table?
a. customer last name.b. sales transaction numbersc. phone number.d. customer number.
29. frank does not want to use numbers to identify customers or employees in his database. which of the following tables would likely require a compound primary key: (i) customer table, (ii) employee table?
a. i only.b. ii only.c. both i and ii.d. neither i nor ii.
30. an inventory table is in third normal form. it is least likely to include which of the following fields?
a. inventory item number.b. vendor id.c. units on hand as of march 1, 2005.d. purchase transaction number.
31. which of the following violates the rules for preparing a data flow diagram?
a. "order data" enters the "take customer order process," but "processed order" leaves it.b. a data flow diagram contains eight processes.c. "customer information" enters a "customer database," but nothing leaves the database.d. a line is labeled "enter customer data".
32. all of the following violate the rules for preparing data flow diagrams except:
a. "inventory information" moves from the "inventory database" to "vendor".b. "customer information" enters the "customer database" without a process.c. a process is labeled "vendor information update".d. data moves directly from "vendor" to "customer".
33. a process labeled "update employee information" has "employee information" flowing into it and nothing flowing out. which of the following is most true?
a. the process should be represented by a circle.b. the process should be converted to an external entity named "employee".c. the process points out an internal control weakness.d. the process should be converted to a data store.
34. consider the partial data flow diagram below:
which of the following is most true?
a. the data flow diagram is correctly prepared.b. the process appears to make something from nothing.c. the word "customer" appears too much.d. the data flow is incorrectly labeled.
37. which symbol above would be represented in a data flow diagram with an arrow?
a. symbol a.b. symbol b.c. symbol c.d. symbol d.
38. how many of the symbols above would be numbered in a flowchart?
a. none.b. one.c. two.d. four.
39. which two symbols above would be represented with a circle in a data flow diagram?
a. symbols a and b.b. symbols c and d.c. symbols a and d.d. symbols c and d.
40. a data flow diagram process is numbered "1.2." which of the following is/are true: (i) the data flow diagram contains at least one other process, (ii) the data flow diagram is a level two diagram.
a. i only.b. ii only.c. both i and ii.d. neither i nor ii.
a. the database should not receive information from a process.b. the process is incorrectly labeled.c. the database should have a number.d. the diagram is not balanced.
42. which of the following partial data flow diagrams has a poorly defined system boundary?
a.
b.
c.
d.
answer: c difficulty: moderate learning objective: 4
43. a level zero data flow diagram contains a rectangle labeled "vendor." which of the following is most true?
a. the rectangle does not require a database table.b. the rectangle indicates a database with a compound primary key.c. the associated database requires a junction table.d. the primary key for the indicated database may be a foreign key elsewhere.
44. alz corporation marks up all its inventory 20% based on cost; that is, if an item costs $100, its selling price is $120. if an item costs $150, which of the following is/are true: (i) the "selling price" field in the table should be $180, (ii) the "selling price" field should be numeric.
a. i only.b. ii only.c. both i and ii.d. neither i nor ii.
45. a relational database contains four tables: vendor, inventory, purchasing agent and purchases. which of the following statements is least true?
a. the purchases table will have two foreign keys.b. the purchases table will have three foreign keys.c. the purchasing agent table will have a compound primary key.d. the database will also need at least one junction table.
the following partial data flow diagram pertains to questions 46 through 50:
48. all of the following statements are true except:
a. all applicants are entered in the contestant database.b. all contestants receive invitations.c. contestants must provide their availability to be scheduled for an audition.d. invitations cannot be sent by e-mail.
49. which of the following statements is least true?
a. "game show applicants" would require a database table.b. "process applications" would require a database table.c. neither "game show applicants" nor "process applications" would require a database table.d. both "game show applicants" and "process applications" would require a database table.
50. the primary key from the ___ table would be posted as a foreign key in the ___ table.
a. game show applicants, process applications.b. process applications, contestant database.c. contestant database, send invitations.d. send invitations, contestant.
problems 51. data flow diagram design considerations: fill in the blanks below based on the dfd design considerations discussed in the text.
a. all processes should have ______ ______.b. the ______ ______ a process should differ from the ______ ______ a process.c. any single dfd should not have more than about ______ processes.d. if an object has only inputs, it must be a(n) ______ ______.e. processes have ______ phrase labels. external entities, data flows and data stores have ______ phrase labels.f. data must be moved by a ______.g. if data flows directly between ______ ______ without processing, then it is outside the ______ ______ and omitted from the dfd.h. a ______ ______ cannot go directly back to the same ______ it leaves.i. when a data flow goes directly into a data store, it signifies a(n) ______.j. when a data flow comes directly from a data store, it refers to a ______ or ______ of the data in the store.
52. data flow diagram symbols
several items that might appear in a data flow diagram appear on the left; the common symbols associated with data flow diagrams appear on the right. match each item on the left with the most appropriate symbol.
indicate whether each of the statements applies to: (a) data flow diagrams only, (b) flowcharts only, (c) both data flow diagrams and flowcharts or (d) neither data flow diagrams nor flowcharts.
______ 1. "marketing department" and "customer" denoted by rectangles.______ 2. column headings read "marketing department" and "customer".______ 3. contains four different symbol types.______ 4. document is read from left to right.______ 5. incorporates more than four symbol types.______ 6. line is labeled "send data to accounting".______ 7. processing tools, such as computers, are clearly indicated.______ 8. rectangle is labeled "1.0: assemble raw materials".______ 9. spans more than one page.______ 10. vendor database is represented by two parallel lines.
54. database table design
several independent statements regarding database table design appear below. indicate the highest normal form that applies to each statement: (a) first normal form, (b) second normal form, (c) third normal form or (d) not in any normal form.
______ 1. a sales staff/automobile table connects two tables: one with data about automobiles, the
other with data about sales staff.______ 2. all columns depend on the table's primary key.______ 3. an "automobile" table contains the name of the sales staff member with the greatest
dollar sales for the month.______ 4. an inventory table contains the following fields: item number, item description,
beginning inventory quantity, average cost of beginning inventory, beginning inventory
date.______ 5. customer table contains information about sales transactions.______ 6. each record in a sales table contains four fields: transaction number, transaction date,
customer name and sales staff name. each student is paired with a single advisor; an advisor's name appears more than once in a table.
______ 7. redundant data does not appear in the table.______ 8. the sales table contains one field for accounts debited and credited.______ 9. the table eliminates repeating groups.
55. data flow diagram creation
big bear car wash (bbcw) is a thriving business in a small town; unless the weather is rainy, bbcw is open from 6 a.m. to 7 p.m., monday through saturday. clients drive their cars into the driveway, where a service writer takes their car wash order. the order includes two things: the style of wash (gold, silver or platinum) and the air freshener scent (cinnamon, vanilla and others). the service writer uses a handheld wireless computer to generate a receipt for the transaction; the receipt also includes the vehicle's license plate number. the customer leaves the keys in the car and goes inside to pay for the wash. the cashier collects the fee and updates bbcw's automobile database; for every nine car washes paid on the same automobile, the tenth is free. the car proceeds through the car wash and is hand-dried by bbcw attendants. the customer shows the paid receipt to the attendant and drives the car away. prepare a level zero data flow diagram of the preceding narrative.
the rancho cucamonga humane society is open from 7 a.m. to 7 p.m., seven days a week. they maintain a computerized inventory of animals available for adoption, which includes: animal type (dog, cat, bird), breed (basset hound, parakeet), gender, approximate age, date placed at the shelter, notes and date adopted. people interested in adopting animals can visit the society at any time; they complete an application, which is reviewed by the society staff. a staff member discusses the potential adopters' wants and needs for a pet, then takes them to see appropriate animals. the potential adopter can see and interact with up to five animals in a single visit. if the customer chooses an animal, the staff member fills out appropriate paperwork before the customer takes the pet home. a staff member makes a follow-up call two weeks later to ensure that everything is satisfactory with both the pet and the adopter. prepare a level zero data flow diagram of the preceding narrative.
57. data flow diagram and flowchart comparison
the systems flowchart below depicts a typical appointment process for dr. m. ali, an internal medicine specialist. in dr. ali's office, a nurse also functions as a receptionist. "vital signs" include weight, temperature and blood pressure. the "chart" is the record of all a patient's visits to the doctor.
prepare a level zero data flow diagram for the same process
consider the data flow diagram below for meg's coffee emporium.
meg's maintains a correctly designed database and appropriate internal controls for the process based on the data flow diagram. place an "x" in the appropriate column for each question below based on the dfd and its underlying database.
amb corporation wants to create database tables to track its product sales. several fields are listed below; organize them into three normalized database tables. indicate primary keys by underlining and foreign keys with brackets. some of the fields may be used more than once; some may not be used at all.
a. as of date.b. average cost per unit.c. beginning quantity.d. customer id.e. date of sale.f. gross profit.
g. inventory iditem description.h. price per unit.i. quantity sold.j. sales staff id.k. total sale.l. transaction number
.
60. database creation
amb corporation wants to create database tables to track its purchases of inventory. several fields are listed below; organize them into three normalized database tables. indicate primary keys by underlining and foreign keys with brackets. some of the fields may be used more than once; some may not be used at all.
a. vendor id.b. units on hand.c. transaction id.d. total amount due to vendor.e. selling price per unit.f. purchasing agent id.
g. number of units purchased.h. inventory item number.i. inventory description.j. date of purchase.k. beginning inventory date.l. average cost per unit.
the following scenario applies to questions 61 through 65:
paige and piper work in the accounting departments of two different corporations in the same geographic area; the companies' sales processes are very similar. when paige's boss asked her to document the sales process, she created the data flow diagram shown below.
61. identify the purpose and nature of each symbol type used in the data flow diagram. 62. interpret paige's data flow diagram by writing a narrative description of the sales process based on it. 63. explain three specific ways paige could use the data flow diagram in her firm's accounting information system. do not simply repeat the generic uses discussed in the text.
64. piper's firm typically uses flowcharts to document business processes. explain two similarities and two differences between data flow diagrams and systems flowcharts. 65. design a database table structure based on one of the data stores in the diagram. clearly identify the primary key and any foreign keys.
