You are given a choice of taking the simple interest on 100,000 invested for 2 years

1. Data flow diagrams allow you to: A. show the timing of data
flows.

B. model
how data flow through an information system. C.
represent the internal structure and functionality of processes. D. demonstrate
the sequencing of activities.

2. Which one of the following is NOT a process modeling deliverable? A. A
context data flow diagram B. Thorough descriptions of each DFD component C.
DFDs of the current physical system D. An entity-relationship diagram

3. Student data contained on an enrollment form would be represented on a data
flow diagram as a: A. process. B.
data flow. C. source. D. data store.

4. Which one of the following statements regarding sources/sinks is TRUE? A.
Data must originate from inside a system from one or more sources. B. If any
processing takes place inside the source/sink, we are most interested in it. C. Sources/sinks are external
entities, meaning they are outside the information system. D. The system
must produce information to one or more sources.

5. Which one of the following statements regarding a data store is TRUE?

A. A data
store has a noun phrase label. B. Data can move
directly from one data store to another data store. C. Data stores illustrate
relationships among entities. D. A data store shows data in motion.

6. Which one of the following statements regarding data flows is TRUE? A. A
data flow may have double-ended arrows. B. A data flow can go directly back to
the same process it left. C. A data flow has a verb phrase label. D. A join in a data flow means that
exactly the same data comes from any of two or more different processes, data
stores, or sources/sinks to a common location.

7. Which one of the following is NOT a true statement regarding data flows? A.
A fork in a data flow means that exactly the same data goes from a common
location to two or more different processes, data stores, or sources/sinks. B. A data flow can go directly back
to the same process it leaves. C. A data flow has a noun label. D. A
data flow has only one direction of flow between symbols.

8. On a data flow diagram, you may repeat: A. both data stores and sources/sinks. B. data
stores and processes. C. sources/sinks and processes. D. relationships.

9. Techniques used for modeling system logic include: A. flow charts. B. data
flow diagrams.

C. decision
tables. D. entity-relationship diagrams.

10. The part of a decision table that links conditions to actions is the
section that contains the: A. action statements. B. condition statements. C.
decision stubs. D. rules.

11. Which one of the following statements is TRUE? A. Data characteristics are
dynamic. B. A data model explains the transient form of an organization. C. An information system design
based on a data orientation, rather than a process or logic orientation, should
have a longer useful life. D. Data flow paths are permanent.

12. Which one of the following is produced and analyzed during conceptual data
modeling?

A. An
entity-relationship diagram for the project's application. B. A data dialogue diagram for the project's application. C. A
Gantt chart for the whole database from which the new application's data are
extracted. D. A data flow diagram that shows how the new system will be
physically implemented.

13. During systems planning and selection: A. a conceptual data model (E-R with
attributes) is prepared. B. a logical model (relational) is prepared. C.
physical files and database designs are prepared. D. an enterprise-wide data model is prepared.

14. Asking system users and business managers "How many instances of each
object might exist?" would help determine: A. the candidate key. B.
attributes and secondary keys. C. integrity rules, minimum and maximum
cardinality, and time dimensions of data. D. the data entities and their descriptions.

15. Asking system users and managers, "Who is
responsible for establishing legitimate values for these data?" helps
determine: A. the candidate key. B. security controls and understanding who really knows the meaning of
data. C. relationships and their cardinality and degrees. D.integrity
rules, minimum and maximum cardinality, and time dimensions of data.

16. Asking system users and business managers, "Is each activity or event
always handled the same way or are there special circumstances?" helps
determine: A. the candidate key.

B. security controls and understanding who really
knows the meaning of data. C.
integrity rules, minimum and maximum cardinality, and time dimensions of data.
D. attributes and secondary keys.



17. Which one of the following statements is TRUE? A. Data entities correspond
to sources/sinks on a data flow diagram. B. A data entity will have many possible instances.
C. Relationships correspond to data flows on a data flow diagram. D. An entity
type is described many times in the data model.

             18. When selecting
an identifier, one should: A. use large composite keys instead of                

                        single-attribute surrogate
keys.

B.
choose a candidate key such that for each

instance of the entity, the attribute is guaranteed to have valid values or is

null. C. choose a candidate key that

allows for duplicate values. D. choose

a candidate key that will not change its value over the life of each instance

of the entity type.

19. If entity B is a mandatory
participant, then the minimum cardinality of the

relationship: A. is one.
B. is two.  C. cannot be defined. D. is

optional.

20. A "many" maximum cardinality is noted on the
E-R diagram by: A. placing a zero through the line near the entity. B. using a
double ellipse near the entity. C. placing a crow's foot

notation near the entity. D. placing two slash marks near the entity.

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