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computer science
systems analysis and design 12th

Questions and Answers of Systems Analysis And Design 12th

Explain why systems implementation sometimes fails.
Match each of the key terms with the definition that best fits it.________ Changes made to a system to evolve its functionality to changing business needs or technologies.Here are the key terms from
Match each of the key terms with the definition that best fits it.________ Each module is tested alone in an attempt to discover any errors in its code.Here are the key terms from the chapter. The
Suppose you work in a senior management position for a large corporation. A member of your team has suggested that your company outsource the help desk functions. Would you support a plan to
Describe several factors that influence thecost of maintaining an information system.
Match each of the key terms with the definition that best fits it.________ The organizational process of changing over from the current information system to a new one.Here are the key terms from the
If you were an analyst on a project team developing a new information system and you were given the task of organizing the user documentation, you would probably not be able to create all of the
Match each of the key terms with the definition that best fits it.________ A measurement of error occurrences that can be tracked over time to indicate the quality of a system.Here are the key terms
Match each of the key terms with the definition that best fits it.________ System documentation that includes the outcome of structured diagramming techniques such as data-flow and entity
What can a systems analyst do to reduce the frequency of corrective maintenance, the most common form of maintenance?
Match each of the key terms with the definition that best fits it.________ The process whereby actual users test a completed information system, the end result of which is the users’ acceptance of
What other information should be collected on a system service request for maintenance as opposed to a system service request for a new system?
Match each of the key terms with the definition that best fits it.________ Guidelines that list the instructions to construct an executable system from the baseline source code.Here are the key terms
What can a systems analyst do to facilitate future maintenance?
Match each of the key terms with the definition that best fits it.________ Changes made to a system to avoid possible future problems.Here are the key terms from the chapter. The page where each term
Suppose an information system was developed following a rapid application development approach like prototyping. How might maintenance be different than if the system had been developed following the
This chapter contains a warning that maintenance activities could lead to further corrective maintenance work if not carefully designed and implemented. What processes or procedures can organizations
Match each of the key terms with the definition that best fits it.________ Detailed information about a system’s design specifications, its internal workings, and its functionality.Here are the key
Match each of the key terms with the definition that best fits it.________ Running the old information system and the new one at the same time until management decides the old system can be turned
Match each of the key terms with the definition that best fits it.________ The process of bringing together for testing purposes all of the modules that a program comprises. Modules are typically
Match each of the key terms with the definition that best fits it.________ Changes made to a system to add new features or to improve performance.Here are the key terms from the chapter. The page
Match each of the key terms with the definition that best fits it.________ A technique used in testing modules, especially modules that are written and tested in a top-down fashion, where a few lines
Match each of the key terms with the definition that best fits it.________ Software modules that have been tested, documented, and approved to be included in the most recently created version
Match each of the key terms with the definition that best fits it.________ A person responsible for controlling the checking out and checking in of baseline modules when a system is being developed
Match each of the key terms with the definition that best fits it.________ Changing from the old information system to the new one incrementally, starting with one or a few functional components and
Match each of the key terms with the definition that best fits it.________ The process of ensuring that only authorized changes are made to a system.Here are the key terms from the chapter. The page
Match each of the key terms with the definition that best fits it.________ The bringing together for testing purposes of all the programs that a system comprises. Programs are typically integrated in
Match each of the key terms with the definition that best fits it.________ Changes made to a system to fix or enhance its functionality.Here are the key terms from the chapter. The page where each
Match each of the key terms with the definition that best fits it.________ System documentation that is part of the program source code or is generated at compile time.Here are the key terms from the
Match each of the key terms with the definition that best fits it.________ Providing ongoing educational and problem-solving assistance to information system users. Support material and jobs must be
Match each of the key terms with the definition that best fits it.________ User testing of a completed information system using real data in the real user environment.Here are the key terms from the
Match each of the key terms with the definition that best fits it.________ Changes made to a system to repair flaws in its design, coding, or implementation.Here are the key terms from the chapter.
Match each of the key terms with the definition that best fits it.________ Trying out a new information system at one site and using the experience to decide if and how the new system should be
Match each of the key terms with the definition that best fits it.________ User testing of a completed information system using simulated data.Here are the key terms from the chapter. The page where
Match each of the key terms with the definition that best fits it.________ A single point of contact for all user inquiries and problems about a particular information system or for all users in a
Match each of the key terms with the definition that best fits it.________ An automated testing environment used to review code for errors, standards violations, and other design flaws.Here are the
Match each of the key terms with the definition that best fits it.________ Typically a Web-based tool for logging, tracking, and assigning system bugs and change requests to developers.Here are the
Define the following key terms: association, class diagram, event, object, object class, operation, sequence diagram, state, state transition, Unified Modeling Language, and use case.
Match each of the key terms with the definition that best fits it.____________ A diagram that depicts the use cases and actors for a system.Here are the key terms from the appendix. The page where
Compare and contrast the object-oriented analysis and design models with structured analysis and design models.
Describe the concepts and principles underlying the object-oriented approach.
Match each of the key terms with the definition that best fits it.____________ Something that takes place at a certain point in time; it is a noteworthy occurrence that triggers a state
Give an example of an abstract use case. Your example should involve at least two other use cases and show how they are related to the abstract use case.
Develop a simple requirements model using use-case diagrams.
Match each of the key terms with the definition that best fits it.____________ The time period during which an object performs an operation.Here are the key terms from the appendix. The page where
Develop a simple object model using class diagrams.
Match each of the key terms with the definition that best fits it.____________ A set of objects that share a common structure and a common behavior.Here are the key terms from the appendix. The page
Give an example of generalization. Your example should include at least one superclass and three subclasses, and a minimum of one attribute and one operation for each of the classes. Indicate the
Develop simple requirements models using state and sequence diagrams.
Match each of the key terms with the definition that best fits it.____________ A notation that allows the modeler to specify, visualize, and construct the artifacts of software systems, as well as
Match each of the key terms with the definition that best fits it.____________ A type of message in which the caller has to wait for the receiving object to finish executing the called operation
Give an example of state transition. Your example should show how the state of the object undergoes a transition based on some event.
Match each of the key terms with the definition that best fits it.____________ The end of an association where it connects to a class.Here are the key terms from the appendix. The page where each
Match each of the key terms with the definition that best fits it.____________ A graph of instances that are compatible with a given class diagram.Here are the key terms from the appendix. The page
Match each of the key terms with the definition that best fits it.____________ The changes in the attributes of an object or in the links an object has with other objects.Here are the key terms from
Match each of the key terms with the definition that best fits it.____________ An entity that has a well-defined role in the application domain and has state, behavior, and identity.Here are the key
Match each of the key terms with the definition that best fits it.____________ A diagram that shows the software components or modules and their dependencies.Here are the key terms from the appendix.
Match each of the key terms with the definition that best fits it.____________ An external entity that interacts with the system (similar to an external entity in data-flow diagramming).Here are the
Match each of the key terms with the definition that best fits it.____________ A complete sequence of related actions initiated by an actor; it represents a specific way to use the system.Here are
Match each of the key terms with the definition that best fits it.____________ A part-of relationship between a component object and an aggregate object.Here are the key terms from the appendix. The
Match each of the key terms with the definition that best fits it.____________ An indication of how many objects participate in a given relationship.Here are the key terms from the appendix. The page
Match each of the key terms with the definition that best fits it.____________ The technique of hiding the internal implementation details of an object from its external view.Here are the key terms
Match each of the key terms with the definition that best fits it.____________ A function or a service that is provided by all the instances of a class.Here are the key terms from the appendix. The
Match each of the key terms with the definition that best fits it.____________ A condition that encompasses an object’s properties (attributes and relationships) and the values those properties
Match each of the key terms with the definition that best fits it.____________ Represents how an object acts and reacts.Here are the key terms from the appendix. The page where each term is first
Match each of the key terms with the definition that best fits it.____________ A diagram that shows the static structure of an object-oriented model: the object classes, their internal structure, and
Match each of the key terms with the definition that best fits it.____________ A relationship among object classes.Here are the key terms from the appendix. The page where each term is first
Match each of the key terms with the definition that best fits it.____________ A class that has no direct instances but whose descendants may have direct instances.Here are the key terms from the
Match each of the key terms with the definition that best fits it.____________ A class that can have direct instances.Here are the key terms from the appendix. The page where each term is first
Match each of the key terms with the definition that best fits it.____________ A depiction of the interactions among objects during a certain period of time.Here are the key terms from the appendix.
Match each of the key terms with the definition that best fits it.____________ A message that transfers control from the sender to the recipient without describing the details of the
Concisely define each of the following key database design terms: relation, primary key, functional dependency, foreign key, referential integrity, field, data type, null value, denormalization, file
Match each of the key terms with the definition that best fits it._____________ A named, two-dimensional table of data. Each relation consists of a set of named columns and an arbitrary number of
Many database management systems offer the ability to enforce referential integrity. Why would using such a feature be a good idea? Are there any situations in which referential integrity might not
Development work on Pine Valley Furniture’s new Customer Tracking System is proceeding according to plan and is on schedule. The project team has been busy designing the human interfaces, and you
Explain the role of designing databases in the analysis and design of an information system.
Match each of the key terms with the definition that best fits it._____________ A relation that contains a minimum amount of redundancy and allows users to insert, modify, and delete the rows without
Assume you are part of the systems development team at a medium-sized organization. You have just completed the database design portion of the systems design phase, and the project sponsor would like
Transform an entity-relationship (E-R) diagram into an equivalent set of well-structured (normalized) relations.
As the lead analyst on the Hoosier Burger project, you have had the opportunity to learn more about the systems development process, work with project team members, and interact with the system’s
Match each of the key terms with the definition that best fits it._____________ The process of converting complex data structures into simple, stable data structures.Here are the key terms from the
PlowMasters is a locally owned and operated snow removal business. PlowMasters provides residential and commercial snow removal for clients throughout a large metropolitan area. Typical services
Merge normalized relations from separate user views into a consolidated set of well-structured relations.
Match each of the key terms with the definition that best fits it._____________ A particular relationship between two attributes.Here are the key terms from the chapter. The page where each term is
Choose storage formats for fields in database tables.
Match each of the key terms with the definition that best fits it._____________ A relation for which every nonprimary key attribute is functionally dependent on the whole primary key.Here are the key
Translate well-structured relations into efficient database tables.
Explain when to use different types of file organizations to store computer files.
Match each of the key terms with the definition that best fits it._____________ A relation that is in second normal form and has no functional (transitive) dependencies between two (or more)
Match each of the key terms with the definition that best fits it._____________ An attribute that appears as a nonprimary key attribute in one relation and as a primary key attribute (or part of a
Describe the purpose of indexes and the important considerations in selecting attributes to be indexed.
Match each of the key terms with the definition that best fits it._____________ An integrity constraint specifying that the value (or existence) of an attribute in one relation depends on the value
Match each of the key terms with the definition that best fits it._____________ A foreign key in a relation that references the primary key values of that same relation.Here are the key terms from
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
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
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
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
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
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

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