Excel Proj 3 - Multiple Choice

Name ______Date ______Systems Analysis & Design Chapter 4 – Multiple Choice Instructions: Circle the correct response.

1. A(n) ______model shows what a system must do. a. physical b. logical c. System d. Enterprise 2. A(n) ______diagram shows how the system transforms input data into useful information. a. entity b. relationship c. data flow d. zero 3. Which of the following is not a relation type that can exist between entities? a. one-to-one b. one-to-many c. many-to-many d. many-to-one 4. A ______is a path for data to move from one part of an information system to another. a. system flow b. data flow c. system logic d. transition path 5. A process that has no input is called a ______process. a. spontaneous generation b. black hole c. gray hole d. negative data flow 6. In a DFD, the symbol for an entity is the ______. Page 2 of 3

a. rectangle b. square c. diamond d. oval 7. ______maintains consistency among a set of DVDs by ensuring that input and output data flows align properly. a. Leveling b. Balancing c. Fronting d. Iterating 8. A ______is the term used to describe a central storehouse of information about a system’s data. a. data house b. data base c. data dictionary d. data warehouse 9. A ______is the smallest piece of data that has meaning with an information system. a. record b. structure c. store d. data element 10. Which of the following is not a logical structure upon which modular design is based? a. Calculation b. Sequence c. Selection d. Iteration Page 3 of 3

Systems Analysis & Design Chapter 4 – True/False Instructions: Circle T if the statement is true or F if the statement is false.

T F 1. Much like data flow diagrams, entity-relationship diagrams depict data and information flows. T F 2. A many-to-many relationship is usually abbreviated M:M. T F 3. A many-to-many relationship is different from the others because the event that links the two entities is actually a third entity that has its own characteristics. T F 4. A set of DFDs provides a logical model of what a system does, not how it does it. T F 5. A gray hole is a process that has at least one input and output, but the input is insufficient to produce the desired output. T F 6. One important convention for a DFD is to make sure you spread out each drawing on as many pages as you need. T F 7. A Diagram 0 doesn’t show any process or data flows, it’s used more as a title or introductory page. T F 8. When you explode a DFD, the higher-level diagram is called the parent diagram. T F 9. When using a bottom-up strategy for creating DFDs, you first identify all functional primitives, data stores, entities, and data flows. T F 10. A decision table shows a logical structure, with all possible combinations of conditions and resulting actions.