Questions and Answers of Systems Analysis And Design

In Fig. 11–30, there is no explicit invariant that states that a Transaction cannot be linked to movements that are linked to the same account, because the structure of the model already demands
Apply the Account/Transaction pattern to the parallel financial transactions of the example shown in Figs. 11–31 to 11–35. As the bills may be paid forward, it may be necessary to use memo
Look at Fig. 11–19 and create a new discount strategy that gives a percentage of discount for sales with more than a certain number of products. Order | < > < > +nr: Natural = < > +date: Date
In Fig. 12–2, although a Sending may have multiple assessments, they must all be from different reviewers. The current model does not guarantee it. Write an invariant that deals with this issue.
Considering Fig. 13-26, a Proposal has an association to Sending that is 1 to *{ordered} stack. Considering that this association is bidirectional, show the mutual-friends implementation of its
Consider Fig. 13-28, try to present a concentration version of this diagram and present the corresponding (smelling) code. Interface : Controller send proposal(a_proposal_id,a_federal_manager_id) a
Produce a design domain version of the classes in Fig. 12-7. Controller id 1 0..1 Person | < > < > +id: PersonID +name: String | < > +date_of_birth Date +/municipality_of_residence: municipality:
Look at Fig. 9-19 and produce an identification of tests that must be made for this class and implement it preferably in Python. Order | < > < > +number: Natural | < > +date: Date | < > +value: Money
Look at Fig. 16–16 and make explicit the parameter bindings necessary for this model. Search Page submit < > Search Proposal Results Details > Proposals DataBinding Proposal selected < > Proposal
Why estimating software development effort is so difficult?What are the obstacles?
Which elements an agile software team must consider to attribute effort to a product?
Why is the rounded Fibonacci series used to assign story points instead of the natural numbers?
How the duration of a sprint can be decided?
Variants and exception handlers are alternate flows for a use case. In which situations should one or the other be used?
Why is the stateless pattern preferable to stateful?
Which programming language structures are represented by the fragments: alt, opt, loop, and ref?
Can a simple system event send data to both a query and a command? Give an example.
Does every step in a real use case correspond to a system query or command?
Why should an attribute not be typed with a class name? Why should an attribute not be used to reference another class?
What is an Enumeration and how to use it in conceptual modeling?
Try to imagine a real-world situation where the right structure to be used is a sequence. Remember that a real sequence allows elements to be repeated and assigns position to elements. Try not to get
Elaborate a list of concepts and subconcepts (subtypes of the original concept, e.g., dog and beagle) from common sense.Then, try to identify the type of each relation: structural, associative, or
Elaborate three real-world examples of map, partition, and relation?
Develop a real-world model that needs an invariant to be correct?
What kinds of words are concepts and attribute candidates in the text of a use case?
How to differentiate concepts from attributes in the text of a use case?
How to find associations in the text of a use case?
What are dependent and independent concepts? Give three examples of each.
Hw to chose which use cases are going to be analyzed first?
Use Google or another search mechanism to find examples of conceptual models including classes with attributes. Analyze those classes and check if they present cohesion problems.Propose alternative
Asystem for registering genealogical trees allows different users to check if they have coincident people in their own trees. If this is the case, the shared person is marked in each tree as
Explain and present an example on how an exception may be transformed into a precondition and vice versa.
Give an example of a mandatory link that can be replaced and another that cannot be.
What are the six kinds of responsibilities that objects may have? What kind of method is used to perform each responsibility?
What are the four kinds of visibility that may exist between objects? Are they symmetrical? How does each of them influence high coupling among classes?
Explain the influence of contract preconditions and exceptions in dynamic models. How do they affect the complexity of the dynamic model?
Explain in detail how a delegate message that appears in a sequence diagram must be implemented.
Why the class drivers cannot be used for system tests?
Why IFML notation needs dataflows that are not navigable?
Construct an IFML model that uses filtered index and viewpoints simultaneously.
What kind of associative table should be used to represent an association that is ordered in both directions? How do you represent it in the case of two ordered sets, or two sequences, or one ordered
What kind of association table should be used to represent an association with an association class that is marked with {bag} on one side?
what differentiates a process-based software development from an agile one?
Doagile methods hinder object-oriented programming? Why?
Why effort estimation is less precise at the beginning of a project?
What is the public for a general view of a system; who would be interested in reading it?
Why are acceptance criteria important in a software project?
Why the business use case diagram may be useful for a general view of the system?
How to represent in a business use case diagram a project with many phases?
Business modeling can occur with different levels of intensity for different kinds of projects. Explain and give examples!
Which aspects of a business may be detailed by a BPMN diagram? Which may be detailed by a state machine diagram?
Which kind of gateways does BPMN have, and which are their purpose?
Can active objects have a state in which they are not performing any task? Give an example.
What is the utility of a system use case through the software development process?
Which business actors and business workers are converted into system actors?
What are functional, nonfunctional, and supplementary requirements and what features might they have?
Why must a preliminary conceptual model be made during the Inception phase?
Explain what is meant by a nonfunctional requirement.What are the primary types of nonfunctional requirements? Give two examples of each.
Three analysis techniques are discussed in this chapter: BPA, BPI, and BPR. What are the distinctions between these techniques?
In general, what is the purpose of the various activities that may be performed in BPR (e.g., outcome analysis, technology analysis, activity elimination)?
The analysis technique of BPA, BPI, or BPR is selected on the basis of several characteristics of the project. What are these characteristics and how do they influence the choice of analysis
Explain the six criteria that distinguish the computing architecture options.
What is meant by total cost of ownership? How does this factor affect the choice of architecture?
How would the following ERD be changed to incorporate the design decision listed next?• The analyst wants to keep track of the user ID of anyone who changes a grade for a course.• A data store is