Systems Analysis and Design, Exam 3

What is the primary disadvantage of a group interview

Scheduling

The first page of the interview guide contains all of the following except

The outcome of the interview

What is the purpose of gathering system records

To gain an objective view of what an employee is doing

In an interview, once you skip a question you can return to it

True

JAD stands for joint appliction design and is an intense, highly structured process

True

What can analysis of work procedure documents reveal

When a procedure is missing

When are forms most useful to the analyst

When they contain organizational data

An effective way to gather information about the system from users is _________-

Asking them questions

A ___________ is a named property or characteristic of an entity that is of interest to the organization

Attribute

________ is NOT a phase in a system development life cycle

Attributes

__________ rules are specifications that perserve the integrity of the logical data model

Business

The ________ defines the number of instance of entity B that can (or must) be associated with each instance of entity A

Cardinality

What is at the core of systems analysis

Collection of Information

A ________ data model is a detailed model that captures the overall structure of organizational data that is independent of any database management system or other implementation considerations

Conceptual

During requirements structuring, a ________ model represents conceptual data requirements for a particular system

Data

A _______ is a picture of the movement of data between external entities and the processes and data stores within a system

Data Flow Diagram

A ____________ is an attribute whose value can be computed from related attribute values

Derived attribute

Which of the following is NOT a phase in the planning game

Documentation

Which of the following is NOT a useful document in the analysis process?

E-mails

A _______ is a person, place event, or concept in the user environment about which the organization wishes to maintain data

Entity

Which business rule specifies that each instance of entity type must have a unique identifier that is not NULL

Entity Integrity

The most common format used for data modeling is __________ diagraming

Entity-Relationship

Which of the following is NOT a form of closed-ended questions

Essay

A __________ is the data manipulation operation (insert, update, or delete) that initiates the operation

Event

A data flow consisting of several sub-flows on a level-n diagram can split apart on a level-0 diagram for a process that accepts this composite data flow as input

False

A physical data model is detailed model that captures the overall structure of organization data that is independent of any database management system or other implementation considerations

False

An aggregation is an association between instances of one or more entity types that is of interest to the organization

False

Conceptual data modeling is not done in parallel with other requirements analysis and structuring steps during systems analysis

False

Continual user involvement works best with a large development team

False

Data flow diagrams are non-versatile diagramming tools and consist of only three symbols

False

Evolutionary Prototyping is used to model parts of the system, and if it is unsuccessful you throw away the system.

False

JADs are best held at the corporate office where everyone's office is nearby

False

The primary deliverable from the physical data modeling step within the analysis phase id an E-R diagram

False

The second phase in the SDLC is design

False

With throwaway prototyping there is never an intention to create a working system

False

What is a possible outcome of NGT

Ideas for a new system

What is the first step in the BPR effort?

Identify the key processes

No process can only have _________ and if an object has only that, then it must be a sink

Inputs

WHich of the following is a primary way to get information

Interviewing

Functional Decomposition is a _________ process of breaking the description of a system down into finer and finer detail, which creates a set of charts in which one process on a given chart is explained in greater detail on another chart

Iterative

A _________ is a DFD that represents a major system's processes, data flows, and data stores at a high-level of detail

Level-0 Diagram

An activity diagram cannot be used ______________

Model work flow but not business processes

An activity diagram cannot be used to __________

Model work flow but not business processes

__________ current system user is a more direct way of seeing how many existing system operates

Observing

A data flow has ___________ directions of flow between symbols. It may flow in both directions between a process and a data store a read before an update

One

No process can have only ________. It would make a data from nothing. If an object has only outputs, then it must be a source.

Outputs

_______ are NOT a part of a decision table

Policies

According to Cockburns template, ____________ are those things the system must insure are true before the use case can start

Preconditions

What unuque characteristic distringuishes each object from other objects of the same type?

Primary Key

A ____________ is the work or actions performed on data so that they are transformed, stored, and distributed

Process

Which tool enables you to quickly take basic requirements and create a limited working system

Prototyping

Which business rule specifies rules concerning the relationships between entity types

Referential Integrity Constraints

A _____________ lists what it takes to satisfy stakeholders if the use case is completed successfully

Success Guarantee

What is the primary purpose of JAD

TO gather system requirements simultaneously

In systems analysis, which of the following is NOT a component you need to understand

The size of the budget

A data flow has a noun phrase label. More than one data flow noun phrase can appear on a single arrow as long as all of the flows on the same arrow move together as one package

True

A relationship definition explains what action is being taken and possibly why it is important. It may be important to state who or what does the action is taken

True

A relationship definition explains what action is being taken and possibly why it is important. It may be important to state who or what does the action, but it is not important to explain how the action is taken

True

An entity instance (also know simply as an instance) is a single occurence of an entity type and is described just once in a data model, whereas many instances of that entity type may be represented by data stored in the database

True

An identifier is a candidate key that has been selected to be used as the unique characteristic for an entity type

True

BPR advocates believe radical increases in the quality of business processes can accomplished with IT

True

Both requirements determination and structuring are often parallel steps, DFDs evolve from the more general to the more detailed as current and replacement systems are better understood

True

DFDs are not as good as flowcharts for depicting the details of physical systems; on the otherhand, flowcharts are not very useful for depicting purely logical information flows

True

Source/Sinks are sometimes referred to as external entities because they are outside the system

True

The information system is depicted as a DFD and the highest-level view of this system is called a context diagram

True

The minimum cardinality of a relationship is the minimum number of instances of entity B that may be associated with each instance of entity A

True

The process of conceptual data modeling begins with developing a conceptual data model for the system being replaced, if a system already exists. This is essential for planning the conversion of the current files or database into the database of the new system

True

When interviewing someone, the interviewer should make sure the questions do imply an answer is right or wrong

True

A recursive relationship is also known as a ________ relationship

Unary

The ______ is a document written to describe how a particular job is performed

Work Procedure

The ______ is a document written to describe how a particular job is perormed

Work Procedure

In the analysis, the amount of data is small

false

With only _______ symbols, you can use DFDs to represent both physical and logical information systems

4

If group members work alone in the beginning of the project and then pool the idass with guidace they are participating in

A nominal group technique

A _______________ diagram shows the conditional logic for the sequence of system activities needed to accomplish a business process

Activity