Babok2 chapter9 daxko

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BABOK® v2.0 Chapter 9: Techniques

Techniques

Outline:

High-level overview of the Techniques

referenced in the Knowledge Areas of the

BABOK Guide. Techniques alter the way a

business analysis task is performed or

describes a specific form the output of a task

may take.

Thank you and Contact Info

Special thanks to DAXKO for sponsoring this meeting

Presenter: Tammy S Bishop, CBAP

Business Systems Analyst, Senior

Drummond Company, Inc.

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Techniques

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Techniques listed here are a subset of those used by practitioners of business analysis.

Business analysts who specialize in a particular methodology or business domain may use only a few of the techniques mentioned or may use other techniques not described herein.

Techniques listed here are applicable to different situations and business domains.

9.5 Data Dictionary and Glossary

Purpose Defining key terms and data relevant to business domain

Description Formally identify and define all terminology used by the

organization or organizational unit

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9.5 Data Dictionary and Glossary

Elements Glossary Data Dictionary Primitive Data Elements

Name Aliases Values/Meanings Description

Composite Data Elements Sequences Repetitions Optional Elements

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9.5 Data Dictionary and Glossary

Usage Considerations Useful for ensuring all stakeholders are in agreement on

the format and content of relevant information

Capturing in a single model ensures terms will be used consistently.

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9.6 Data Flow Diagrams (DFD) - Purpose

Purpose Shows how information is Input, Processed, Stored, and

Output from a system Description

Visual representation of how info is moved through a system External Entities that provide data to or receive it from a

system Processes of system that transform data Data stores in which data is collected for a period of time Data Flows by which data moves between entities,

processes, and data stores

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9.6 Data Flow Diagrams (DFD) - Elements

Elements External Entities Data Store Data Process Data Flow

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9.6 Data Flow Diagrams (DFD) - Usage

Strengths Discover technique for processes or data Verification of Functional Decomposition or Data Model Easily understood Useful analysis deliverable for developers in Structured

Programming Environment Weaknesses

No responsibility shown No alternative paths

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9.6 Data Flow Diagram (DFD) - Example

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9.7 Data Modeling - Purpose

Purpose Describe concepts relevant to a domain, relationships

between those concepts, and info associated with them Description

Diagram supported by Textual description Represents People, Places, Things, and Concepts

important to the business Entity Relationship Diagram and Class Diagrams are

most common

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9.7 Data Modeling - Elements

Elements Concept Attributes

Name Values/Meanings Description

Relationship Metadata

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9.7 Data Modeling - Usage

Advantages Flexibility of different levels of description Consistent modeling approach that supports transition

through Planning, Analysis, Design, Implementation Disadvantages

Complex Concepts may be unfamiliar to people without background

in IS Difficult to understand if not properly presented Terms/Definitions vary in use

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9.7 Data Modeling - Example

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9.12 Functional Decomposition - Purpose

Purpose To decompose processes, functional areas, or

deliverables into component parts and allow each part to be analyzed independently

Description Ensure problem is separated into sub-problems that are

as independent as possible so work can be assigned to different groups.

Provides ability to scale and manage large projects

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9.12 Functional Decomposition - Elements

Elements Identifies high-level functions and then breaks those

functions down into smaller pieces Represent processes carried out by the organization Continues until sub-function cannot break down further Similar to a WBS (Work Breakdown Structure) Use Hierarchical Diagrams, Tree Diagrams, or numbering

each sub-function

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9.12 Functional Decomposition - Usage

Advantages Provides consistent view of scope of effort Estimates can be made easier Conceptual model of work needed to deliver solution

Disadvantages No guarantee all components are captured Decomposing a problem without understanding the

relationship between the pieces may create an inappropriate structure that impedes analysis

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9.12 Functional Decomposition - Example

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9.21 Process Modeling - Purpose

Purpose Gain understanding of how work involving multiple roles

and departments is performed Description

Process linked by sequence Shows events by people, rules, or passage of time May include manual or automated activities or both Complete when objective or goal is completed Used for Current and Future state processes

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9.21 Process Modeling - Elements

Elements Notation Elements Process Improvement

Six Sigma Lean BPM approaches

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9.21 Process Modeling - Usage

Advantages Users are comfortable with elements / concepts Effectively show how to handle large number of scenarios Used for eliciting, verifying requirements and training

Disadvantages May be complex and hard to understand when contain too

much activity Problems are not always readily identifiable by looking at

model

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9.21 Process Modeling - Example

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9.27 Scope Modeling - Purpose

Purpose Used to describe scope of analysis or solution

Description Basis for defining and delimiting scope of business

analysis Shows boundaries of scope and business domain

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9.27 – Scope Modeling - Elements

Elements Context Diagram Events Features Use Case Diagram Business Process

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9.27 Scope Modeling - Usage

Advantages Makes it easier to determine what should be in scope and

out of scope for solution Disadvantages

Usually leave much detailed scope still needing to be investigated and detailed

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9.27 Scope Modeling - Example

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