copyright © 1997 by rational software corporation midterm exam when: 3:30 – 4:50pm, thursday,...

Copyright copy 1997 by Rational Software Corporation

Midterm Exam When 330 ndash 450PM Thursday October 4 2012 Where HM 201s Format

Close book Question types

Multiple choices Fill in blanks Short answer

Refer to all materials for reviewing for example lecture notes in-class activities assignments


The Process of Architecting(Adapted from Dr Osman Balci)

Sung Hee Park

Department of Mathematics and Computer Science

Virginia State University

September 20 2012


Waterfall Model


The Process of Architecting

The process of Architecting takes the Requirements Specification Document (RSD) as input and generates an Architecture Specification as output

Architecting QA integrates the assessments of quality of the Architecture Specification work

product architecting process quality quality of the people employed in architecting and project characteristics related to the life cycle

stage forarchitecting


UML SupportsApplication Development

The output Architecture Specification is created using a standard description framework such as DoD Architecture Framework (DoDAF)



The Architecting process deals with the creation of a systemsoftware architecture to satisfy the requirements

The Architecting process involves Identification of a known systemsoftware

architecture Composition of an architecture from a set of

known systemsoftware architectures or Creation of a new systemsoftware

architecture


Architecture Definition ldquoThe structure of components their

relationships and the principles and guidelines governing their design and evolution over timerdquo[DoD Integrated Architecture Panel 1995 based on IEEE STD 61012]

ldquoAn architecture is the fundamental organization of a system embodied in its components their relationships to each other and to the environment and the principles guiding its design and evolutionrdquo[IEEE STD 1471-2000]


Network-Centric Software Architecture A network-centric software architecture refers to the

fundamental organization of software components that interoperate over a network

relationships among the software components and the principles and guidelines governing the design and

evolution of those software components We use the term ldquonetworkrdquo to refer to one or a

combination of many types of communications networks such as Global System for Mobile communication (GSM) Internet local area network (LAN) mobile ad-hoc network (MANET) virtual private network (VPN) or wireless network


Major Network-Centric Software Architectures 1 Client-Server Architecture (CSA) 2 Distributed Objects Architecture (DOA) 3 Peer-to-Peer Architecture (PPA) 4 Service-Oriented Architecture (SOA)


Architecture versus Design A design is an instantiation of an

architecture similar to how an object is an instantiation from a class

ExampleClient-Server Architecture

Server Computer

Design based on the Net platform

Design based on the the Java EE platform

Instantiation Instantiation


Architecture versus Design SystemSoftware Architecture is used to Make buy decisions (acquisition) Discriminate between options Assist in ldquoDiscoveryrdquo of the true

requirements Drive one or more systems to a common

ldquouserdquo or purpose (system of systems) SystemSoftware Design is used to Develop systemsoftware components Build the systemsoftware Understand configuration changes as the

systemsoftware is modified


What is a Network-Centric System A network-centric system is an interconnection of

software hardware and humans that operate together over a network to accomplish a set of goals

The main idea behind the ldquonetwork-centricrdquo characterization is to connect everything with everything else such as communities of interest computers databases mobile devices organizational entities processes satellites sensors and software

A network-centric system is commonly engineered to provide pervasive services for use by anyone anywhere and anytime

The user consumes pervasive services by using smart devices such as workstation computers desktop computers laptop computers hand-held computers cellular smart phones and kiosks all connected to a network


An Example Network-Centric System of Systems


Definitions of Terms COI Community of Interest COPS Common Open Policy Service DEN Directory Enabled Networking HTTP HyperText Transfer Protocol IPSP Internet Protocol Security Policy IPv6 Internet Protocol Version 6 NDMP Network Data Management Protocol P2P Peer-to-Peer SOAP Simple Object Access Protocol TCPIP Transmission Control Protocol Internet

Protocol UDDI Universal Description Discovery and

Integration


Emergence of New Areas The vision paradigm

ldquoConnecting everything with everything elserdquo created two new major areas

1 System of Systems Engineering (SoSE)(System of Systems Architecting)

2 Enterprise Systems Engineering(Enterprise Systems Architecting)


An Example Network-Centric System of Systems 1048708 A system of systems (SoS) is an interconnection of interdependent systems through a network to provide a given capability 1048708 An SoS may be a single platform or consist of a collection of separate but interdependent interconnected platforms performing different functions 1048708 A military aircraft for example is a single platform operating with different systems on board such as propulsion weapons navigation and communications systems 1048708 A ground station dependent on a satellite is an example of an SoS interconnected platforms performing different functions 1048708 A distinguishing factor for an SoS is that it depends on all of its elements working interactively and continuously within a network to accomplish a pre-specified capability 1048708 The loss of any SoS element degrades the performance or capabilities of the entire SoS An SoS provides a capability not possible with any of the individual elements acting alone


Architecting Challenges Network-Centric SystemSoftware

Architecting System of Systems Architecting Enterprise Systems Architecting

Job Titles Software Architect System Architect Enterprise System Architect

Midterm Exam

The Process of Architecting (Adapted from Dr Osman Balci)

Waterfall Model


UML Supports Application Development

The Process of Architecting (2)

Architecture Definition

Network-Centric Software Architecture

Major Network-Centric Software Architectures

Architecture versus Design

Architecture versus Design (2)

What is a Network-Centric System


Definitions of Terms

Emergence of New Areas

An Example Network-Centric System of Systems (2)

Architecting Challenges


The Process of Architecting(Adapted from Dr Osman Balci)

Sung Hee Park

Department of Mathematics and Computer Science

Virginia State University

September 20 2012


Waterfall Model
















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Integration












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architecture

















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Integration












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Server Computer




















Integration












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Server Computer




















Integration












Midterm Exam


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Integration












Midterm Exam


Waterfall Model


























Midterm Exam


Waterfall Model















copyright © 1997 by rational software corporation midterm exam when: 3:30 – 4:50pm, thursday,...

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