This document discusses several languages and processors that have been developed for requirements specification in software development. It describes Problem Statement Language (PSL) and its processor, the Problem Statement Analyzer (PSA), which were developed to allow concise statement and automated analysis of requirements. It also discusses the Requirements Statement Language (RSL) and Requirements Engineering Validation System (REVS). Finally, it provides a brief overview of Structured Analysis and Design Technique (SADT), including its data and activity diagram components.
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Model-Based Systems Engineering (MBSE) is an ambiguous concept that means many things to many different people. The purpose of this presentation is to “de-mystify” MBSE, with the intent of moving the sub-discipline forward. Model-Based Systems Engineering was envisioned to manage the increasing complexity within systems and System of Systems (SoS). This presentation defines MBSE as the formalized application of modeling (static and dynamic) to support system design and analysis, throughout all phases of the system lifecycle, and through the collection of modeling languages, structures, model-based processes, and presentation frameworks used to support the discipline of systems engineering in a model-based or model-driven context. Using this definition, the components of MBSE (modeling languages, processes, structures, and presentation frameworks) are defined. The current state of MBSE is then evaluated against a set of effective measures. Finally, this presents a vision for the future direction of MBSE.
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MBSE Training Crash Course covers all the principals, theories, and techniques associated with Model-based Systems Engineering (MBSE). Model-based systems engineering (MBSE) is the formal use of modeling to provide system requirements, design, analysis, and verification and validation activities. Such activities initiate in the conceptual design stage and continue throughout development and later life cycle phases.
#MBSE Goals
Improved communications
With stakeholders
Within the engineering project teams
Across spoken language barriers
Improved quality
Early identification of requirements issues
Enhanced system design integrity
Improved specification of allocated requirements to hardware and software
Fewer errors during integration and testing
More rigorous requirements traceability
Consistent documentation
Increased productivity
#Audience
MBSE training crash course is a 4-day training designed for:
Product manager
Project director
R and D manager
Engineering manager
Systems engineer
Capability developer
Business analyst
Systems analyst
System architect
Enterprise architect
Software systems engineer
Software engineer
Design engineer
Hardware engineer
Project engineer
LSA specialist
Industrial engineer
#Training Objectives
Upon completion of MBSE training crash course, the attendees are able to:
Comprehend the general principals of systems engineering
Discuss the main characteristic of a system
Understand the overall process factors, and their relationships, which together establish the bases of systems engineering
Relate the roles of developer as supplier, developer as creator and developer as acquirer, and to position their own roles, and those of their customers (internal and external) and suppliers (internal and external) within this framework
Perform the fundamentals of some of the more important techniques of system requirements analysis, development of physical solution, development of logical solution, evaluation of solution alternatives (trade-off studies) and design iteration
Discuss the principles and major techniques of engineering management in a systems project context
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Decision Table
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Prototype
Spiral
RAD
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System Analyst,
Database Administrator
Database Designer
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Language and Processors for Requirements Specification
1. LANGUAGE AND PROCESSORS FOR
REQUIREMENTS SPECIFICATION
S.Nandhini
II- Msc (CS&IT)
Nadar Saraswathi college of Arts &Science
Theni
2. LANGUAGES AND PROCESSORS FOR
REQUIREMENTS SPECIFICATION
A number of special purpose languages and processors
have been developed to permit concise statement and
automated analysis of requirements specification for
software.
our purpose is to provide a brief introduction to
requirements specification languages and processors.
3. PSL/PSA
problem statement language(PSL) was developed by professor
Daniel teich row at the university on Michigan
The problem statement analyzer is the PSL processor
PSL and PSA system is sometimes referred to as components
of the ISDOS project
PSL/PSA system is sometimes referred to as the ISDOS
system
4. PSL system descriptions can be divided into eight major
aspects:
system input/output flow
System structure
Data structure
Data derivation
System size and volume
System dynamics
System properties
project management
System input/output flow
The system I/o flow aspect deals with the interaction
between a system and its environment.
5. System structure
system structure is concerned with the hierarchies among objects in
a system.
Data structure
data structure aspect includes all the relationships that exist among
data used and/or manipulated by a system as seen by the users of
the system.
Data derivation
The data derivation aspect of the system description specifies
which data object are involved in particular processes in the system.
6. System size and volume
The system size and volume aspect is concerned with the size of the system
and those factors the volume of processing required.
System dynamic
Aspect of a system description presents the manner in which the system”
behaves” over time.
project management requires that project related information.
7. PSA (PROBLEM STATEMENT
ANALYZER)
PSA is an automated analyzer for processing requirements
stated in PSL.
PSA system can provide reports in four categories
Data base modification reports , reference reports , summary
reports and analysis reports
9. RSL/REVS
The requirements statement language(RSL) was developed by the
TRW defense and space Systems group to permit concise .
The Requirements engineering validation system(REVS)processes
and analyzes RSL statements.
The fundamental characteristic of RSL is the flow oriented approach
used to describe real-time systems.
The requirements engineering and validation system (REVS)
operates on RSL statements.
10. REVS CONSISTS OF THREE MAJOR
COMPONENTS
A translator for RSL
A centeralized data base the Abstract System Semantic
Model(ASSM).
A set of automated tools for processing information in ASSM.
11. STRUCTURED ANALYSIS AND DESIGN
TECHNIQUE (SADT)
SADT was developed by D.T Ross and colleagues at
softtech, inc.
The SADT language is called the language of Structured
Analysis(SA).
Data diagram specify data object in the nodes and activities
on the arcs.
Activity diagram the inputs and output are data flows and the
mechanisms are processors control is data that is used, but not
modified
12. ACTIVITY DIAGRAM COMPONENTS
ACTIVITY Source
program
interpreter
Interpreter
data Source
Source
program
Computed
result
Input
data
Control data
processor
output
data
13. DATA DIAGRAM COMPONENTS
DATA OUTPUT
DATA
Operating
system
Generating
activity
Control activity
Storage device
Using
activity
Disk
Printer
spool
Interpreter