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computer science
systems analysis and design 12th

Essentials Of Systems Analysis And Design 5th Edition Joseph Valacich, Joey F George - Solutions

Contrast the differences between range control and referential integrity when controlling data integrity.
Match each of the key terms with the definition that best fits it._____________ Two different names that are used for the same attribute.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed or derived)
Suppose you were designing a default value for the marriage status field in a student record at your university. What possible values would you consider and why? How would the default value change depending on other factors, such as type of student (undergraduate, graduate, professional)?
Match each of the key terms with the definition that best fits it._____________ A single attribute name that is used for two or more different attributes.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed
Match each of the key terms with the definition that best fits it._____________ The smallest unit of named application data recognized by system software.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed
Match each of the key terms with the definition that best fits it._____________ A coding scheme recognized by system software for representing organizational data.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or
Match each of the key terms with the definition that best fits it._____________ A field that can be derived from other database fields.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed or derived) field2.
Match each of the key terms with the definition that best fits it._____________ The value a field will assume unless an explicit value is entered for that field.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or
What are the four key steps in logical database modeling and design?
Match each of the key terms with the definition that best fits it._____________ A pattern of codes that restricts the width and possible values for each position of a field.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1.
What are the four steps in transforming an E-R diagram into normalized relations?
Match each of the key terms with the definition that best fits it._____________ A special field value, distinct from 0, blank, or any other value, that indicates that the value for the field is missing or otherwise unknown.Here are the key terms from the chapter. The page where each term is first
Match each of the key terms with the definition that best fits it._____________ A named set of rows and columns that specifies the fields in each row of the table.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or
Match each of the key terms with the definition that best fits it._____________ The process of splitting or combining normalized relations into physical tables based on affinity of use of rows and fields.Here are the key terms from the chapter. The page where each term is first explained is in
Match each of the key terms with the definition that best fits it._____________ A named set of table rows stored in a contiguous section of secondary memory.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or
Match each of the key terms with the definition that best fits it._____________ A technique for physically arranging the records of a file.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed or derived)
Match each of the key terms with the definition that best fits it._____________ A field of data that can be used to locate a related field or row of data.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed
Match each of the key terms with the definition that best fits it._____________ The rows in the file are stored in sequence according to a primary key value.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or
Match each of the key terms with the definition that best fits it._____________ The rows are stored either sequentially or nonsequentially, and an index is created that allows software to locate individual rows.Here are the key terms from the chapter. The page where each term is first explained is
Match each of the key terms with the definition that best fits it._____________ A table used to determine the location of rows in a file that satisfy some condition.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated
Match each of the key terms with the definition that best fits it._____________ One or a combination of fields for which more than one row may have the same combination of values.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1.
Match each of the key terms with the definition that best fits it._____________ The address for each row is determined using an algorithm.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed or derived)
Match each of the key terms with the definition that best fits it._____________ Data represented as a set of related tables or relations.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed or derived)
Match each of the key terms with the definition that best fits it._____________ An attribute whose value is unique across all occurrences of a relation.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Calculated (or computed or
Match each of the key terms with the definition that best fits it._______________ Templates to display and process common attributes of higher-level, more abstract items.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Audit
Pine Valley Furniture’s Customer Tracking System project is now ready to move into the systems design phase. You are excited because this phase involves designing the new system’s forms, reports, and databases. During this morning’s meeting with Jim Woo, he asked you to design several forms
Discuss the differences between a form and a report. What characteristics make a form or report good (bad) and effective (ineffective)?
Match each of the key terms with the definition that best fits it._______________ A formal method for designing and representing human-computer dialogues using box and line diagrams.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the
Discuss the various ways that information can be highlighted on a computer display. Which methods are most effective? Are some methods better than others? If so, why and when?
As the lead analyst for the Hoosier Burger project, you have worked closely with Bob and Thelma Mellankamp. Having completed the systems analysis phase, you are now ready to begin designing the new Hoosier Burger information system. As the lead analyst on this project, you are responsible for
Match each of the key terms with the definition that best fits it._______________ A business document that contains only predefined data; it is a passive document used only for reading or viewing; typically contains data from many unrelated records or transactions.Here are the key terms from the
What problems can occur if a system fails to provide clear feedback and error messages to users?
Pet owners often have difficulty locating petsitters for their pets, boarding their pets, or just getting the pets to the veterinarian. Recognizing these needs, Gladys Murphy decided to open Pet Nanny, a business providing specialized pet-care services to busy pet owners. The company provides a
Match each of the key terms with the definition that best fits it._______________ A technique for showing users where they are in a Web site by placing a series of “tabs” on a Web page that shows users where they are and where they have been.Here are the key terms from the chapter. The page
Use a search engine to find recommendations for good design of Web interfaces. How are these recommendations similar to those discussed in this chapter? How do they differ?
Match each of the key terms with the definition that best fits it._______________ The sequence of interaction between a user and a system.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Audit trail2. Cookie crumbs3. Dialogue4.
Obtain a report of some information, either from your employer (e.g., a budget or project report) or from your school (e.g., your student academic record). Evaluate the design of the report using the general guidelines in Table 8-2. TABLE 8-2: Guidelines for Designing Forms and
Match each of the key terms with the definition that best fits it._______________ A business document that contains some predefined data and may include some areas where additional data are to be filled in; typically based on one database record.Here are the key terms from the chapter. The page
Match each of the key terms with the definition that best fits it._______________ A record of the sequence of data entries and the date of those entries.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Audit trail2. Cookie
Match each of the key terms with the definition that best fits it._______________ The use of small simple images to allow a Web page to be displayed more quickly.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Audit trail2.
Think of an online retailer you’ve recently used or considered using for a purchase. Why is good design of that retailer’s interface important for the retailer? Visit the online retailer and evaluate the interface, highlighting several good things and several bad things.
Describe what is meant by a cookie crumb. How do these help prevent users from getting lost?
Describe why you might want to use lightweight graphics on some Web pages and large detailed graphics on others.
Why is it especially important to eliminate dataentry errors on an electronic commerceWeb site?
How can template-based HTML help to make a large electronic commerce site more maintainable?
During your time as a Pine Valley Furniture intern, you have learned much about the systems analysis and design process. You have been able to observe Jim Woo as he serves as the lead analyst on the WebStore project, and you have also received hands-on experience with the Customer Tracking System
Explain the process of designing forms and reports, and the deliverables for their creation.
Apply the general guidelines for formatting forms and reports.
Format text, tables, and lists effectively.
Explain the process of designing interfaces and dialogues, and the deliverables for their creation.
Describe and apply the general guidelines for interface design, including guidelines for layout design, structuring data-entry-fields, providing feedback, and system help.
Design human-computer dialogues, including the use of dialogue diagramming.
Discuss interface design guidelines unique to the design of Internet-based electronic commerce systems.
What are the general guidelines for collecting data through observing workers?
Match each of the key terms with the definition that best fits it.____________ The official way a system works as described in organizational documentation.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Business process
Explain business process reengineering and how it affects requirements determination.
What are the general guidelines for collecting data through analyzing documents?
Match each of the key terms with the definition that best fits it.____________ Questions in interviews and on questionnaires that have no prespecified answers.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Business process
Suppose you are a systems analyst charged with gathering information requirements. You decide that you want to use prototyping to gather these requirements. It provides benefits beyond interviews and observations but also presents unique challenges. Discuss the challenges you expect to face and
Match each of the key terms with the definition that best fits it.____________ The trained individual who plans and leads joint application design sessions.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Business process
Understand how requirements determination techniques apply to development for Internet applications.
Match each of the key terms with the definition that best fits it.____________ The structured, measured set of activities designed to produce a specific output for a particular customer or market.Here are the key terms from the chapter. The page where each term is first explained is in parentheses
Questionnaires can be administered both on paper and via the Internet. Online questionnaires allow for the use of complex analysis tools and real-time results. However, online questionnaires have idiosyncratic challenges. Three such challenges can be computer access concerns, getting users to
Compare collecting information through observation and through document analysis. Describe a hypothetical situation in which each of these methods would be an effective way to collect information system requirements.
Match each of the key terms with the definition that best fits it.____________ Questions in interviews and on questionnaires that ask those responding to choose from among a set of specified responses.Here are the key terms from the chapter. The page where each term is first explained is in
Using the example of an online cell phone apps store, list relevant data flows, data stores, processes, and sources/sinks. Draw a context diagram and a level-0 diagram that represent the apps store. Explain why you chose certain elements as processes versus sources/sinks.
As a Pine Valley Furniture intern, you have gained valuable insights into the systems development process. Jim Woo has made it a point to discuss with you both the WebStore and the Customer Tracking System projects. The data requirements for both projects have been collected and are ready to be
Understand the logical modeling of processes through studying examples of data-flow diagrams
Match each of the key terms listed with the definition that best fits it.___________ A graphic that illustrates the movement of data between external entities and the processes and data stores within a system.Here are the key terms from the chapter. The page where each term is first explained is in
What is a data-flow diagram? Why do systems analysts use data-flow diagrams?
Draw data-flow diagrams following specific rules and guidelines that lead to accurate and well-structured process models.
Think and write about how data-flow diagrams might be modified to allow for time considerations to be adequately incorporated.
Match each of the key terms listed with the definition that best fits it.___________ The conservation of inputs and outputs to a data-flow diagram process when that process is decomposed to a lower level.Here are the key terms from the chapter. The page where each term is first explained is in
How would you answer someone who told you that data-flow diagrams were too simple and took too long to draw to be of much use? What if they also said that keeping data-flow diagrams up to date took too much effort, compared to the potential benefits?
Evergreen Nurseries offers a wide range of lawn and garden products to its customers. Evergreen Nurseries conducts both wholesale and retail operations. Although the company serves as a wholesaler to nurseries all over the United States, the company’s founder and president has restricted its
Decompose data-flow diagrams into lower-level diagrams.
Match each of the key terms listed with the definition that best fits it.___________ That part of a decision table that lists the conditions relevant to the decision.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Action
Find another example of where data-flow diagrams were successfully used to support business process reengineering. Write a report, complete with DFDs, about what you found.
Balance higher-level and lower-level dataflow diagrams.
Match each of the key terms listed with the definition that best fits it.___________ A data-flow diagram that represents a system’s major processes, data flows, and data stores at a high level of detail.Here are the key terms from the chapter. The page where each term is first explained is in
Use data-flow diagrams as a tool to support the analysis of information systems.
Match each of the key terms listed with the definition that best fits it.___________ The origin and/or destination of data; sometimes referred to as external entities.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Action
What is the benefit of creating multiple levels of DFDs? Consider the concept of DFD consistency. Why is consistency important to take advantage of the multiple levels of DFDs that may be created?
Use decision tables to represent process logic.
Match each of the key terms listed with the definition that best fits it.___________ In a decision table, a condition whose value does not affect which actions are taken for two or more rules.Here are the key terms from the chapter. The page where each term is first explained is in parentheses
Why do you think analysts have different types of diagrams and other documentation to depict different views (e.g., process, logic, and data) of an information system?
Match each of the key terms listed with the definition that best fits it.___________ A data-flow diagram of the scope of an organizational system that shows the system boundaries, external entities that interact with the system, and the major information flows between the entities and the
Match each of the key terms listed with the definition that best fits it.___________ The lowest level of decomposition for a data-flow diagram.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Action stubs2. Balancing3.
Match each of the key terms listed with the definition that best fits it.___________ The extent to which all necessary components of a data-flow diagram have been included and fully described.Here are the key terms from the chapter. The page where each term is first explained is in parentheses
Explain what the term DFD consistency means and provide an example.
Match each of the key terms listed with the definition that best fits it.___________ A matrix representation of the logic of a decision, which specifies the possible conditions for the decision and the resulting actions.Here are the key terms from the chapter. The page where each term is first
Explain what the term DFD completeness means and provide an example.
Match each of the key terms listed with the definition that best fits it.___________ The extent to which information contained on one level of a set of nested data-flow diagrams is also included on other levels.Here are the key terms from the chapter. The page where each term is first explained is
How well do DFDs illustrate timing considerations for systems? Explain your answer.
Match each of the key terms listed with the definition that best fits it.___________ A DFD that is the result of n nested decompositions of a series of subprocesses from a process on a level-0 diagram.Here are the key terms from the chapter. The page where each term is first explained is in
Match each of the key terms listed with the definition that best fits it.___________ The work or actions performed on data so that they are transformed, stored, or distributed.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1.
Match each of the key terms listed with the definition that best fits it.___________ That part of a decision table that specifies which actions are to be followed for a given set of conditions.Here are the key terms from the chapter. The page where each term is first explained is in parentheses
Match each of the key terms listed with the definition that best fits it.___________ Data at rest, which may take the form of many different physical representations.Here are the key terms from the chapter. The page where each term is first explained is in parentheses after the term.1. Action
Match each of the key terms listed with the definition that best fits it.___________ Graphically representing the processes that capture, manipulate, store, and distribute data between a system and its environment and among components within a system.Here are the key terms from the chapter. The
Match each of the key terms listed with the definition that best fits it.___________ The process of discovering discrepancies between two or more sets of data-flow diagrams or discrepancies within a single DFD.Here are the key terms from the chapter. The page where each term is first explained is

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