MIS 3320 Exam 2 Sanchez with 100% Correct Answers
!@#$%%%%%
Process Modeling - (ANSWERS)the graphical representation of a company's business process
or workflows, as a means of identifying potential improvements %%%%%%
Data Flow Diagramming (DFD) - (ANSWERS)a process modeling tool that capture, manipulate,
store, and distribute data between a system and its environment and among system
components
Process - (ANSWERS)verb phrase task, step-by-step instructions are followed that transform
inputs into outputs
Data Flow - (ANSWERS)data flowing from place to place, such as an input or output to a
process; data in motion
External Agent - (ANSWERS)the source or destination of data outside the system
Data Store - (ANSWERS)data at rest being stored for later use, usually corresponds to a data
entity on an entity relationship diagram
Source - (ANSWERS)external agents that send or receive information
Sink - (ANSWERS)could be another company, system within our system
Context Diagram - (ANSWERS)an overview, shows the relationship between the external agents
and the system (process 0)
Rules for Context Diagram - (ANSWERS)Process 0, is the project name itself
No connector or data stores
Cannot have more external agents later on
* Present top down
Level 0 Diagram - (ANSWERS)shows the decomposition of the main system in to its major
process and the data that flows between them
Rules for Level 0 Diagram - (ANSWERS)Do not include all data stores (only the ones shared
between the major processes)
Always number process 1.0, 2.0, 3.0
Level 1 Diagram - (ANSWERS)a detailed diagram for each #.0 process
Rules for Level 1 Diagram - (ANSWERS)Data flow should use a noun preface by some adjective
Watch our for inconsistent names
Naming Conventions - (ANSWERS)Processes = verb phrase (verb + object)
, MIS 3320 Exam 2 Sanchez with 100% Correct Answers
Data Flows = noun/noun phrase (adj + object) !@#$%%%%%
Data Stores = noun/noun phrase (adj + object) %%%%%%
External Agent = noun/noun phrase (adj + object)
* Be balanced
* Be consistent
* Be readable
DFD Rules - (ANSWERS)Process = must have both inputs and outputs; at least one output must
be different
Data flow= has only one direction; cannot return directly to the process
Functional decomposition - (ANSWERS)break down the overall function into smaller parts
Abstraction - (ANSWERS)
Noun technique - (ANSWERS)a technique used to identify things in the problem domain by
finding and identifying the nouns in a dialog or description
"Things" - (ANSWERS)defining system requirements by understanding "things" (within the
problem domain) that needs to be stored
Entity Relationship Diagram (ERD) - (ANSWERS)a diagram consisting of data entities, their
attributes, and their relationships
- data modeling technique
- used to later build the database
- will become tables later
Entity - (ANSWERS)the term used to describe things about which the system needs to store
information; a noun (person, place, object, or event)
Attributes - (ANSWERS)descriptive pieces of information about things or objects; information
about an entity that is within the scope
Atomic attributes - (ANSWERS)Simple and single valued, they cannot be composite, multi-
valued attributes or contain nested relations.
Ex: Broken down versions of custaddress and custname
Composite attributes - (ANSWERS)more than one piece of information (need to be separated
Ex. Address
Derived attributes - (ANSWERS)calculated field
!@#$%%%%%
Process Modeling - (ANSWERS)the graphical representation of a company's business process
or workflows, as a means of identifying potential improvements %%%%%%
Data Flow Diagramming (DFD) - (ANSWERS)a process modeling tool that capture, manipulate,
store, and distribute data between a system and its environment and among system
components
Process - (ANSWERS)verb phrase task, step-by-step instructions are followed that transform
inputs into outputs
Data Flow - (ANSWERS)data flowing from place to place, such as an input or output to a
process; data in motion
External Agent - (ANSWERS)the source or destination of data outside the system
Data Store - (ANSWERS)data at rest being stored for later use, usually corresponds to a data
entity on an entity relationship diagram
Source - (ANSWERS)external agents that send or receive information
Sink - (ANSWERS)could be another company, system within our system
Context Diagram - (ANSWERS)an overview, shows the relationship between the external agents
and the system (process 0)
Rules for Context Diagram - (ANSWERS)Process 0, is the project name itself
No connector or data stores
Cannot have more external agents later on
* Present top down
Level 0 Diagram - (ANSWERS)shows the decomposition of the main system in to its major
process and the data that flows between them
Rules for Level 0 Diagram - (ANSWERS)Do not include all data stores (only the ones shared
between the major processes)
Always number process 1.0, 2.0, 3.0
Level 1 Diagram - (ANSWERS)a detailed diagram for each #.0 process
Rules for Level 1 Diagram - (ANSWERS)Data flow should use a noun preface by some adjective
Watch our for inconsistent names
Naming Conventions - (ANSWERS)Processes = verb phrase (verb + object)
, MIS 3320 Exam 2 Sanchez with 100% Correct Answers
Data Flows = noun/noun phrase (adj + object) !@#$%%%%%
Data Stores = noun/noun phrase (adj + object) %%%%%%
External Agent = noun/noun phrase (adj + object)
* Be balanced
* Be consistent
* Be readable
DFD Rules - (ANSWERS)Process = must have both inputs and outputs; at least one output must
be different
Data flow= has only one direction; cannot return directly to the process
Functional decomposition - (ANSWERS)break down the overall function into smaller parts
Abstraction - (ANSWERS)
Noun technique - (ANSWERS)a technique used to identify things in the problem domain by
finding and identifying the nouns in a dialog or description
"Things" - (ANSWERS)defining system requirements by understanding "things" (within the
problem domain) that needs to be stored
Entity Relationship Diagram (ERD) - (ANSWERS)a diagram consisting of data entities, their
attributes, and their relationships
- data modeling technique
- used to later build the database
- will become tables later
Entity - (ANSWERS)the term used to describe things about which the system needs to store
information; a noun (person, place, object, or event)
Attributes - (ANSWERS)descriptive pieces of information about things or objects; information
about an entity that is within the scope
Atomic attributes - (ANSWERS)Simple and single valued, they cannot be composite, multi-
valued attributes or contain nested relations.
Ex: Broken down versions of custaddress and custname
Composite attributes - (ANSWERS)more than one piece of information (need to be separated
Ex. Address
Derived attributes - (ANSWERS)calculated field
