Essentials of Systems Analysis and Design (6th Edition)
6th Edition
ISBN: 9780133546231
Author: Joseph Valacich, Joey George
Publisher: PEARSON
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Draw a data flow diagram (DFD) for the development of the admission and registration system, bearing in mind that the users of the system, the processes and the stored data are as follows:
system users
processes
saved data
students
- Deletion and addition
- withdrawal from the course
- apology for the semester
- student schedule
- withdrawal requests
- apology requests
faculty members
-recording attendance and absence
- monitoring grades,
- attendance and absence detection
- Transcript for class
department heads
approving requests
Deanship of Admission and Registration
implementing requests
Draw a data flow diagram starting from the zero level to the second level. Please add the detailed processes and data saved by level
State diagrams:
Select one:
a. show the activities involved in a process or in data processing
b. which show how the system reacts to internal and external events
c. show the interactions between a system and its environment
d. show interactions between actors and the system and between system components
The form of data model which focuses the concepts in the same way as the data stored in computer system is classified as
Chapter 6 Solutions
Essentials of Systems Analysis and Design (6th Edition)
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- For a business of your choice, use a graphics program to develop a data-flow diagram of one of its main processes and an entity-relationship diagram showing the data within the scope of the system.arrow_forwardA new sales ordering system needs a relational database that contains a customer table, a product inventory table, and an order table. Use a word-processing, graphics, or spreadsheet program to draw an entity-relationship diagram showing the relationships among these entities. Next, design each of these tables showing the keys and attributes to be included in each table. Include five sample records for each table.arrow_forwardData modelling is most often accomplished through the use of a(an) ________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagramarrow_forward
- How can Data Flow Diagrams be used to represent system processes, data stores, data flows, and external entities in system modeling?arrow_forwardThe Model-View-Controller design pattern separates data access, business logic, data display, and user interaction. It also separates data display from user interaction. Discuss or contribute this explanation.arrow_forwardWhat is the context of a process (its definition, together with any supplementary physical objects or data)?arrow_forward
- In an information system, "information" is: Data that has been subjected to a "value-added" process Data that has been manipulated and organized Data that has been placed in a proper context for a human user All of the choices are correctarrow_forwardUnlike an actual data flow diagram, a conceptual data flow diagram is not a representation of the data flow.arrow_forwardAn actual data flow diagram differs from a conceptual data flow diagram in that the latter is more particular while the former is more generic.arrow_forward
- Sequence diagrams: Select one: a. show the object classes in the system and the associations between these classes b. show interactions between actors and the system and between system components c. show the interactions between a system and its environment d. show the activities involved in a process or in data processingarrow_forwardWhat is the distinction between a conceptual data flow diagram and a physical data flow diagram?arrow_forwardActivity diagrams: Select one: a. show the object classes in the system and the associations between these classes b. show the activities involved in a process or in data processing c. show interactions between actors and the system and between system components d. show the interactions between a system and its environmentarrow_forward
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