Diagrams & Models

Question 1

Concept Modelling

Answer 1

Organize the business vocabulary needed to consistently and thoroughly communicate the knowledge of a domain.

Question 2

Data Flow Diagram

Answer 2

Shows where data comes from, which activities process the data, and if the output results are stored or utilized by another activity or external entity.

Data Store - collection of data where data may b ready repeatedly and stored for future use.

Process - activity that is manually or automatically performed for a business reason.

Data Flow - is the movement of data between an external, a process and a data store.

Question 3

Data Modelling

Answer 3

Describes the entities, classed or data objects relevant to a domain, the attributes that are used to describe them, and the relationships among them to provided a common set of semantics for analysis and implementation.

Question 4

Conceptual Data Model

Data Modelling

Answer 4

Highest level and little detail. Establishes a consistent vocabulary describing business information.

Question 5

Logical Data Model

Data Modelling

Answer 5

Incorporates rules to conceptual model to manage the integrity of the data and relationships. Medium Detail.

Question 6

Physical Data Model

Data Modelling

Answer 6

Greater detail used for implementation and to describe how a database is physically organized. It addresses performance, concurrency and security.

Question 7

Data Modelling Elements

Answer 7

Entity or Class - Represent something physical, something abstract or an event.

Attribute - defines information associated with an entity, including allowable values, and the type of information it represents. (Names, values, descriptions)

Relationship or Association - Indicates which entities relate to others and how.

Multiplicity/Cardinatliy - Indicate the number of minimum and maximum occurrences allowed on each side of that relationship.

Diagrams - One or more diagrams that show entities, attributes, and relationships.

Metadata - Describes what the entities represent, when created or changes, how they should be used, how often they are used, when and by whom.

Question 8

Decision Modelling

Answer 8

Show how repeatable business decisions are made.

Question 9

Decision Table
(Decision Modelling)

Answer 9

A decision table is a compact, tabular representation of a set of business rules, Each row (or column) is a rule and each column (or row) represents one of the conditions of that rule.

Question 10

Decision Tree
(Decision Modelling)

Answer 10

Decision trees are also used to represent a set of business rules. Each path on a decision tree leaf node is a single rule.

Question 11

Decision Reqs. Diagram

Decision Modelling

Answer 11

a visual representation of the information knowledge, and decision making involved in a more complex business decision.

Question 12

Weighted Decision Matrix

Decision Modelling

Answer 12

Assess options in which each criterion is weighted based on importance. The higher the weighting the more important.

Question 13

Process Modelling

Answer 13

Standardized graphical model used to show how work is carried out and is a foundation for process analysis.

Question 14

Business Process Model

Process Modelling

Answer 14

Describes the sequence of work across defined tasks and activities through an enterprise.

Question 15

System Process Model

Process Modelling

Answer 15

defines the sequence of control among programs/units within a computer system.

Question 16

Program Process Flow

Process Modelling

Answer 16

Shows the order of execution of program statements with a software program.

Question 17

Process Modelling Elements

Answer 17

Activity - an individual step or piece of work that forms part of the business process.

Event - a zero-time occurrence with initiates, interrupts, or terminates an activity or task with a process or the process itself.

Direction Flow - a path that indicates the logical sequence of the workflow.

Decision Point - a point in the process where the flow of work splits into two or more flows.

Link - A connection to other process maps.

Role - a type of person or group involved in the process.

Question 18

Value Stream Mapping

Process Modelling

Answer 18

involves the diagramming and monitoring of inputs and application points for processing those inputs, starting from the front end of a supply chain.

Question 19

BPMN Business Process Model Notation

Process Modelling

Answer 19

• Provides and industry standard language for modelling business process.
• distinguishes the activities of different participants in a process with pools and swim lanes

Question 20

Activity Diagram
(Process Modelling)

Answer 20

• adopted for more general process modelling purposes including business process modelling.
• Similar to a flowchart
• Employees swimlanes to show responsibilities, synchronization bars to show parallel processing, and multiple exit decision points.

Question 21

Scope Modelling

Answer 21

Define the nature of one or more limits or boundaries and place elements inside or outside those boundaries.

Question 22

Scope Modelling Elements

Answer 22

Objectives - clarify the: span of control, relevance of elements, and where effort will be applies.

Scope of Change or Context - elements that will be altered as part of a chagne.

Level of Detail - defines the appropriate level of abstraction at which scope elements are described.

Relationships - identifying scope model dependencies or impacted elements.

Assumptions - Relies on assumptions such as the definition of needs, outcomes, impact of changes, and feasibility of the solution.

Scope Modelling Results - represented as text, diagrams or matrices.

Question 23

Venn Diagram
(Scope Modelling)

Answer 23

uses overlapping circles or shapes to illustrate the relationships between two or more components.

Question 24

Context Diagram
(Scope Modelling)

Answer 24

high level an represents an entire system and also reveals high level interfaces between human actors, organizational units, business processes or other solution components.

This model helps identify a boundary as seen from outside or out of scope.

Question 25

Use Case Diagram

Scope Modelling

Answer 25

Graphical representation of the relationships between actors and one or more use cases supported by the solution.

Visually depicts the scope of the solution.

Question 26

Sequence Diagram

Answer 26

model the logic of usage scenarios by showing the information passed between objects in the system through the execution of the scenario.

Synchronous Call - the sender cannot act until a return message is received.

Asynchronous Call - the object may send many signals simultaneously, but may only accept one signal at a time.

Question 27

Sequence Diagram Elements

Answer 27

Lifeline - represents the lifespan of an object during the scenario being modelled.

Activation Box - represents the period during which an operation is executed.

Message - interaction between two objects.

Question 28

State Modelling

Answer 28

describe and analyze the different possible states of an entity with a system, how that entity changes from one state to another and what can happen to the entity when it is in each state.

Question 29

State Modelling Elements

Answer 29

State - status entity can transition to

State Transition - Process that changes the entity from one state to another triggered by an event.

State Diagram - Shows the life cycle of one entity from beginning to retirement.

State Tables - two dimensional matrix showing states and transitions between them.