Arteon: Architectural and Technology Ontology
Transcript of Arteon: Architectural and Technology Ontology
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GESSISoftware Engineering for Information Systems Group
Arteon
ARchitectural and TEchnology ONtology
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Outline• Context• Method• Arteon• Ongoing work
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CONTEXTThe things we must know before we enter into details
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Context: Related concepts
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Context: Related concepts
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Context: Overview
Knowledge
Arteon
SRSNF
Current and other systems
Human support
Architectural decisions
ArchiTech
Method
Architectural views
LogicalDeployment
PhysicalProcess
Code
SRSF
Views Generation
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Context: Method
Requirements analysis
Human support
SRSNF
Current and other systems
Constraints and Quality
goals
Architectural decision making
Architectural decisions
ARTEON
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METHODUnderstanding the method with examples
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Method: The requirements
Requirements analysis
Human support
SRSNF
Current and other systems
Constraints and Quality
goals
Architectural decision making
Architectural decisions
ARTEON
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Method: The requirements• Non-Functional Requirements:
NF1: The system should be developed with Open Source Software (OSS)
NF2: The data should be stored in each organization
NF3: The system should allow operation from each organization
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Method: Requirements analysis
Requirements analysis
Human support
SRSNF
Current and other systems
Constraints and Quality
goals
Architectural decision making
Architectural decisions
ARTEON
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Method: Requirements analysis• Requirements analysis:
NF1: The system should be developed with Open Source Software (OSS)• C1: Property “License type” equal to “OSS”• G1: Community involvement
NF2: The data should be stored in each organization• C2: Property “Persistence” equal to “distributed”
• G2: Security
NF3: The system should allow operation from each organization• C3: Property “Access type” includes “remote access”
• G3: Availability
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Method: Decision making
Requirements analysis
Human support
SRSNF
Current and other systems
Constraints and Quality
goals
Architectural decision making
Architectural decisions
ARTEON
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Method: Decision making• Making decisions (two ways):
Constraint satisfaction decisions (quantitative)• Constraints over properties of the elements of the
system
Quality-oriented decisions (qualitative)• Knowledge of decisions• Relation between decisions and quality attributes
• We think that both ways can be used together
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Decide to use
elements
Add new constraints
Evaluate constraints
Decision making: 1st way• Constraint satisfaction decisions (1st way)
• Four iterations: Architectural styles Architectural
components
Technological styles Technologies
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1st way
Arch. styles C1 C2 C3
3-Layer
SOA
Blackboard
Pipe and filter
MVC
• C1: Property “License type” equal to “OSS”• C2: Property “Persistence” equal to “Distributed”• C3: Property “Access type” includes “Remote access”
AllowDeny
Human support
Evaluate constraints
Decide to use
elements
Add new constraints
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AllowDeny
1st way
Arch. Components C1 C2 C3 C4 C5 C6
Presentation layer
Remote presentation
Persistence layer
Distributed persistence
Domain layer
• C4: “3-Layer” requires “Presentation layer”• C5: “3-Layer” requires “Domain layer”• C6: “3-Layer” requires “Persistence layer”
Evaluate constraints
Decide to use
elements
Add new constraints
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1st way
Tech. styles C1 C2 C3
Java
LAMP
.NET
• C1: Property “License type” equal to “OSS”• C2: Property “Persistence” equal to “Distributed”• C3: Property “Access type” includes “Remote access”
• No new constraints.
Human support
Evaluate constraints
Decide to use
elements
Add new constraints
LAMP is an acronym of a set of software subsystems used to build a global solution.
AllowDeny
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1st way• C7: “LAMP” requires “Web server” implemented by “Apache”
• C8: “LAMP” requires “DBMS” implemented by “MySQL”
Technologies C7 C8
Web server
Apache
DBMS
MySQL
Evaluate constraints
Decide to use
elements
Add new constraints
AllowDeny
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Decision making: 2nd way• Quality-oriented decisions (2nd way)
Select decisions
Increase knowledge
Evaluate quality
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2nd way• Which are the quality goals?
Community involvement Security Availability
• In a real case it will be similar to: 50% security related requirements 30% usability related requirements 20% efficiency related requirements
Human support
Evaluate quality
Select decisions
Increase knowledge
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2nd way• Security related decisions
Authentication facilities Secure communication User account management …
• Selecting one or more decisions will impact on new constraints E.g. secure communications will require some
technology such as SSL.
Evaluate quality
Select decisions
Increase knowledge
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2nd way• Two ways to increase the knowledge:
Learning: when a new decision is made from a constraint imposed by a NFR. The decision is related to the quality property where the NFR was classified.
Reliability: when a decision is selected in the quality-oriented decisions process its reliability is increased in relation to the quality property.
Evaluate quality
Select decisions
Increase knowledge
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ARTEONModel representation of Arteon
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Arteon: Overview• We have 3 in 1 ontologies
Requirements Architectural elements Reasoning
• The ontology is build in UML
• More than 20 interrelated concepts
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Arteon: Requirements• Totally simplified to reuse existing works
• The ontology can represent all kinds of requirements, but we only consider NFRs.
• The requirements (NFRs) should be: Measurable / Checkable Classified in a quality model Formalized (e.g. i*)
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Arteon: Architectural elements• “3-Layer”, “Layered”• “3-Layer” specializes “Layered”• “Presentation layer”, “Domain layer”, etc.• “3-Layer” use “Presentation layer”, etc.• “Distributed persistence”, “Remote presentation”• “Distributed persistence” combinable with “Remote
presentation”• “Distributed persistence” variation for “3-layer”
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Arteon: Architectural elements• “LAMP”, “Stack solution”• “LAMP” specializes “Stack solution”• “BDMS”, “Web server”, etc.• “Stack solution” use “BDMS”, etc.• “Distributed DBMS”• “Apache”, “MySQL”, etc.• “DBMS” implementable by “MySQL”
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Arteon: Architectural elements• There are many similarities between
architecture and technology
• So, we put it all together
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Arteon: Reasoning• Which is the relationship with requirements?
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Arteon: Reasoning• Which is the relationship with architectural
elements?
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Arteon: Reasoning• C1: Property “License type” equal to
“OSS”
• Element “LAMP” have the property “License type” with the
value “OSS”
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Arteon: Reasoning• C1 is satisfied by element “LAMP”
• We make the decision “D1” to use element “LAMP” We know that the “Community involvement” quality is helped by
the decision “D1” (Knowledge acquisition!)
Human support
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Arteon: Reasoning• “LAMP” requires “SGBD”
• Really means: “LAMP” impose the decision to use “SGBD”
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ONGOING WORKWhat are we going to do from now on
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Ongoing work• Exploratory work: Survey, interviews• Ontology design improvements• Analysis of the ontology quality• Population of the ontology (knowledge)• Validation (case of study)• Tool support
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GESSISoftware Engineering for Information Systems Group
Comments and questions
David Ameller <[email protected]>