Structured development in BMC Remedy AR System

© 2011 World Wide Remedy Users Group. All Rights Reserved. 1
1

STRUCTURED
DEVELOPMENT
IN AR SYSTEM
ANDERS WILHELM
© 2011 World Wide Remedy Users Group. All Rights Reserved.

Anders Wilhelm
2

© 2010 World Wide Remedy Users Group. All Rights Reserved.

Objectives and Results
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 Objectives
 Why structured development is important
 Project management models which suits AR
System development
 AR System coding
- tips and tricks

© 2011 World Wide Remedy Users Group. All Rights
Reserved.

Part 1
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 WHY has structured development in AR
System become important?

Reserved.

The AR System development
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platform-the good stuff
 A true rapid applications development
platform
 You can build big things with small teams

 Focus on functions rather than coding

 Build applications with *a lot* of

functionality in a short time
 Easy to deploy changes

 Feature set getting close to traditional

programming languages
Reserved.

Things used to be simple
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 In the early days

Help desk
Categorization People Equipment
Case

< 20 forms
< 100 filters
< 100 active links

Reserved.

Now AR System applications
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are huge

>50 forms
> 5000 filters
> 10000 active links

Reserved.

AR System weaknesses?
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 Isolated objects – the object soup - understanding
the code
 No modeling support – poor form design =
problematictic foundation (card houses)
 Poor/sloppy naming may cause a debugging/
maintenance nightmare
 A field is a field – no difference between data fields,
temporary variables, gui fields etc (well… it is also a
*good* thing)

 RAD with high code quality?
Reserved.

What makes a sound
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application?
 What is a sound application in terms of AR System?

 Built on a good and solid foundation
 Adherence to naming and numbering conventions
 Code re-use
 Experienced developers

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Part 2 - Development stages
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 Stages in AR System development
 Where to start

 Getting user acceptance/commitment

Reserved.

What we got from RADD
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Requirements
gathering

Design
Prototyping

Implementation

Test

Deployment

Maintenance

Reserved.

Requirements gathering
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 The Workshop
 RADD documentation
principle
 Use-cases
 Informal functional
speciﬁcations
 User-usage centric

 Pitfalls

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Requirements gathering
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 Protocol analysis – The users describe each step
 Observation – watch how a task is performed
 Scenario analysis – trace a task from initial business
trigger to sucessful outcome
 Activity sampling – track how users spend their time
on tasks

Reserved.

Requirement gathering
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 Most CASE-tools are focused towards
traditional coding

 Xuse
 Mantis

 UFO

 Pivotal Tracker

Reserved.

Modelling/Designing a
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system
 Often a step which is rushed through
 More important now than before as

applications become larger

Reserved.

Why is the data model
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important?
 The forms ARE the data model
 We build all functionality on the ﬁelds and

the forms

Reserved.

Challenges with AR System
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database modeling
 Normalized – de-normalized
 Some typical data model ”tricks” cannot be

done with AR System forms/functionality
 No concept of objects eg. Customer

information ﬁelds - ﬁeld groups

Reserved.

Prototyping
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 Goals for a prototype
 Verifying process coverage

 User acceptance

 Prototyping in AR System is different

compared to traditional prototyping

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Prototyping - purpose
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 Using the prototype as development base?

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Prototyping
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 Don’t overdo the prototype
 Don’t get too attached to it

 Listen to your users

 Cost is low to change the prototype

compared to last minute changes

Reserved.

Iterative development
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 AR System is well suited for iterative
development
 The iterations can be very short compared

to traditional programming
 Agood way to get user acceptance for

functionality (building just enough)

 Informal testing

Reserved.

Testing
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 Use the use-cases as base for test-cases

 Who should do the testing
 What to test?

 Load testing?

Reserved.

Deployment
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 Checklists
 Knowing what to roll out and how

 Back-out plans

 Resource availability

Reserved.

Managing a system in
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production
 Maintenance / changes

 Data-driven approaches

 Tracking user requests

 Proﬁling / benchmarking

Reserved.

Part 3 - Projects
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 Sizing the team
 Which project management model to

choose?
 Which development model to choose?

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Different types of projects
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 One man
 Small teams

 Large teams

Reserved.

The lone ranger- The Admin
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Developer System admin

Report designer

DBA Trainer

Process guru
GUI-expert
Integration-
Analyst specialist

Application admin Web developer

Reserved.

Small teams – 3—9 people
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Architect - Project manager

Integration Trainer/
Lead developer Tool smith specialist Documentor

Reserved.

Large teams – 10>
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Project manager

Implementation architect Implementation architect

Lead developers Lead developers

Developers Developers

Team 1 Team 2

Reserved.

Project/Development
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management methods
 What is the difference?

Reserved.

Project management
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methods
 PROPS
 PPS

 Prince2

 SPICE

 V-model

 Barashi

 Administrative/budget/risk management

Reserved.

My current favorite PM-
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method - Barashi

Reserved.

Development methodology
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 RADD
 RUP

 Agile methodology; SCRUM, XP etc

 Any takers for JSP?

Reserved.

RADD
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 Requirement gathering
 Usability

 No formal methodology – best practices

Reserved.

RUP
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 Iterative development
 Manage requirements

 Component based architecture

 Visual software modelling

 Continuous veriﬁcation of quality

 Change management

Reserved.

RUP brought us
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 Use-cases
 Prototyping

 Actor driven approach to usability

 Iterative approach

 Not 100% suited for AR System
development
 Ess-UP

Reserved.

Why is Scrum a good match
37
for AR System development?
 Less focus on long-termtime plans, instead
delivering business value
 Concensus on what to build

 Quickly adjust to changes

 Get the development team commited

Reserved.

Scrum
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 Product owner
 Scrum master

 Team

Reserved.

Scrum
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 Product backlog
 Sprint backlog

 Sprint

 Daily scrum

 Sprint review

Reserved.

Scrum – Pigs and chickens
40

Reserved.

Scrum
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“Pig” roles
 Scrum Master
 The team
 Product Owner

“Chicken” roles
 Stakeholders (customers, vendors
 Managers
 .

Reserved.

Scrum - weaknesses
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 Not well suited for outsourcing
 Requires *strong* developers
 Not well suited for HUGE projects
 Always moving forward, not looking back (lack of
sprint reviews)

Reserved.

Scrum - planning
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Reserved.

Scrum - planning
44

Reserved.

Scrum
45

Reserved.

Part 4 - Good code
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 Some suggestions on how to build
 Some suggestions on how to name

 Some suggestions on modules

Reserved.

Birds of a feather session?
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 Why is there no Dev handbook?

Reserved.

The sound remedy
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application revisited
 Structure and consistency
- Naming conventions
- Modular functionality
- Field id numbering conventions

 Normalized / Non-normalized database
models

Reserved.

Data modeling
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Reserved.

Normalized/De-normalized
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 De-normalized by default
 How/What should be normalized

 Techniques - pros/cons

Reserved.

Relationships
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 Foreign key ﬁelds
 Association tables

 Joins

 Populate-on-fetch (GE-ﬁlters)

Reserved.

During modeling - objects
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 Try to group ﬁelds together into objects

 Use ﬁeld id series for different object
groups

 Code re-use
 Extendability

Reserved.

Data modeling tools
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 Visio
 Sybase DataArchitect

 ERWin

 AR*Evolution

 ER/Studio

 MySQL Workbench

Reserved.

Strategies for development
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 Modular code
 Code re-use

 Guides
 Common objects

 Naming conventions

 Services

- re-using code
Reserved.

Common objects - form
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 Use a standard set of fields you use on
every form (deletion flag, ”Admin” flag, etc)

 Functionality for deletion, user profiles,
admin-control

Reserved.

Common objects -
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application
 Common notiﬁcation rule engine

 Field control based on conﬁguration

 Metrics

Reserved.

Structure your code-
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execution order
 0-200
 201-400

 401-600

 900->

 By using guides you’ve got plenty of leg-
room

Reserved.

Structure your code-guides
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 Guides are your friend
 Filter paths (admin, data cleansing)

 Standard guides

 Guides for complex search/ﬁltering

Reserved.

Structure your code-services
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 Validation
 Complex functions



Reserved.

Field numbering
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 Field IDs - ”Ristat i runa” - that is...
”Written in stone” for non-swedes

 Form-Object centered approach

Reserved.

Field naming
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 Complex fields
 Temporary fields / variables

 Data fields

 GUI-fields (like buttons, labels etc)

Reserved.

Form-Workﬂow naming
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 Any standard is good as long you have one
here is mine

 ph_MainHolder_Info



Reserved.

Common pitfalls
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 Many small changes – messy system
 Too quick, too sloppy

 How to keep track of everything

Reserved.

Documentation
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 System documentation?
 Change tracking

 What to document – obejcts

 Tools of the trade

Reserved.

Documentation tools
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 BMC Developer studio 7.6.04
 Arsdoc

 AR System Developer + (Master

documenter)
 3rd party tools

Reserved.

Questions/Discussions
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Reserved.

67
61 Thank You
wilhelm@erwe.se

http://www.erwe.se/awilhelm

Reserved.

Example used in this tutorial
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 Ongoing project
 Application for Complaints management

 Barashi methodology

 Scrum

 Validation / Strict change management
 21 CFR part 11

Reserved.

Structured development in BMC Remedy AR System

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Editor's Notes