Chapter7_answers - Exam Name_ TRUE/FALSE. Write 'T' if the...

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Exam Name___________________________________ TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) The data flow diagram graphically characterizes data processes and flows in a business system. 1) 2) The biggest advantage of the data flow approach lies in the conceptual freedom found in the use of the four symbols. 2) 3) The data flow diagram may be used to analyze the proposed system. 3) 4) An arrow is used to depict an external entity that can give and receive data from the system. 4) 5) Each external entity is labeled with a noun. 5) 6) A rectangle with rounded corners is used to show the occurrence of a transforming process. 6) 7) Processes in a rectangle with rounded corners sometimes denote something other than a change in or transformation of data or a system/subsystem. 7) 8) Processes that transform data should be named with a noun which indicates the data that has been transformed. 8) 9) In logical data flow diagrams, the type of physical storage is unspecified. 9) 10) The name of the data flow coming out of a process should be different than the name of the data flow going into the process. 10) 11) Processes may have the same number if they are on different levels. 11) 12) The systems analyst needs to conceptualize data flows from a topdown perspective. 12) 13) The highest level data flow diagram is called Diagram 0. 13) 14) With a topdown approach, the diagrams move from specific to general. 14) 15) More detail is achievable through using a process called "exploding the diagrams." 15) 16) Data flow diagrams must be drawn working from left to right on the page. 16) 17) All data flow must either originate or terminate on a process. 17) 18) Data stores may be directly connected to each other by a data flow. 18) 19) Linear data flow from process to process is normal in higher level data flow diagrams. 19) 1
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20) Unbalanced decomposition means that the data flow to or from a parent process does not match the data flow in or out of a child diagram. 20) 21) A logical data flow diagram shows how the business operates. 21) 22) A physical data flow diagram shows how the system will be implemented. 22) 23) Transaction files are used to link all logical data flow diagram processes. 23) 24) Partitioning is used to create a set of computer programs and manual procedures from a data flow diagram. 24) 25) A CRUD matrix is a tool used to represent where master files are read, updated, created, and deleted within the system. 25) 26) A use case summarizes an event and defines one activity. 26) 27) Partitioning may be used to show which Web pages are placed on a secure server and which are on a non - secure server. 27) 28) Ajax may be used to obtain data for a Web form without changing Web pages. 28) 29) Having separate Web forms means that the forms will become more complex. 29) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 30) Which graphically characterize(s) processes and data flows through a business system?
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This note was uploaded on 01/11/2012 for the course ACCOUNTING ACOM taught by Professor Sanchocastro during the Spring '11 term at De La Salle University.

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Chapter7_answers - Exam Name_ TRUE/FALSE. Write 'T' if the...

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