2. Contents
Software Development Tools
2
What Is CASE Tools
Software Development Tools
3
Components Of CASE Tools
4
Layers Of CASE Tools
5
Categories Of CASE Tools
6
Components Of CASE Tools
Perspective Of CASE Tools
7
Benefits Of CASE Tools
8
Problems Of CASE Tools
3. Software Development Tools
Two types of tools used by software engineers:
1. Analytical tools
–
Stepwise refinement
–
Cost-benefit analysis
–
Software metrics
2. CASE tools
4. What Is CASE Tools
1. Software that is used to support software process
activities
2. Provides software process support by
• automating some process activities
• providing information about the software being
developed
3. Currently used in every phase/workflow of life cycle
5. Components Of CASE Tools
Diagrammin
g Tools
Code
Generator
Report
Generators
Central
Repository
Documentati
on
Generator
Analysis
Tools
6. Components Of CASE Tools
1. Central Repository
Centralized Database.
Used to store Graphical Diagrams & Prototype
Forms and Reports of analysis and diagramming
workflow
Act as
Information Repository
Data Dictionary
7. Components Of CASE Tools
2. Report Generator
Used to
Create, modify and test prototypes of computer displays and
reports.
Identify which data items to display or collect for each screen
or report
8. Components Of CASE Tools
3. Diagramming Tool
Allow you to represent a system and its components
visually.
Allows higher level processes to be easily decomposed.
Can examine processes or data models at high or low
level.
9. Components Of CASE Tools
4. Analysis tools
Generate reports that help identify possible
inconsistencies, redundancies and omissions.
Generally focus on
diagram completeness and consistency.
data structures and usage.
10. Components Of CASE Tools
5. Documentation Tool
Create standard reports based on contents of
repository.
Need textual descriptions of needs, solutions, trade-offs,
diagrams of data and processes, prototype forms and
reports, program specifications and user
documentation.
High-quality documentation leads to 80% reduction in
system maintenance effort in comparison to average
quality documentation.
11. Components Of CASE Tools
6. Code Generation Tool
Create code for the custom feature in object model.
Code Generation Tool helps in:
Connect to the Repository.
Select the Object Model.
Select the custom features to generate code for.
Define properties for each custom feature.
Specify the output of the project.
12. Layers Of CASE Tools
Upper CASE Tools
Lower CASE Tools
Integrated CASE Tools
13. Upper CASE Tools
1.
2.
Supports Software Development activities
implementation
Focuses on Analysis Phase
Diagramming Tools
Report Generator
Analysis Tool
14. Lower CASE Tools
1.
Supports Programming and Integration tasks.
2.
Focuses on
Central Repository
Code Generator
Configuration Management
17. Categories Of CASE Tools
CASE
techn ol o
Wo r k bench es
To ols
Ed ito rs
File
Co mp ilers
compar
a to rs
d esig n
w o r k bench es
En v iro nmen ts
In teg r ated
An al y si s and
Multi -metho d
gy
Sing le-meth od
w o r k bench es
en v iro nmen ts
Pr o g r ammin g
Pr o cess-centr
ed
en v iro nmen ts
T
esting
Gener al-p urp ose
Lan gu a g e- sp ecific
w o r k bench es
w o r k bench es
18. Perspective Of CASE Tools
Three Perspective
1. Functional perspective
– Tools are classified according to their specific function.
2. Process perspective
– Tools are classified according to process activities that
are supported.
3. Integration perspective
– Tools are classified according to their organisation into
integrated units.
19. Benefit Of CASE Tools
Improve software quality
1. Enforce discipline
2. Help communication between development
team members
3. Information is illustrated through diagrams
that are typically easier to understand
4. Development information is centralized
20. Reduction of time and effort
1. Tasks are much faster to complete and alter
2. Enhance reuse of models or models’
components
3. Can reduce maintenance costs
21. Problems Of CASE Tools
1. Limitations in flexibility of documentation
2. Major danger: completeness and syntactic
correctness does NOT mean compliance with
requirements
3. Costs associated with the use of the tool
• Purchase price
• Training
The Tools of the TradeSoftware engineers need two types of tools1) Analytical tools used in software developmentsuch as stepwise refinement and cost-benefit analysistheoretical tools2) Products that assist the teams of software engineers in developing and maintaining softwareusually termed CASE tools (computer-aided software engineering tools)
Computer AIDED Software EngineeringNot automated; still takes human intervention; ASSISTS the humanSoftware that automates all or part of the development processSoftware tool that assists in some aspect of the production of softwareSoftware that helps carry out much of the dredge work associated with software development (e.g., documentation creation and organization)Organizations use CASE tools to:Improve the quality of the systemIncrease speed of design and developmentEase and improve the testing processImprove integration of development activitiesImprove quality and completeness of documentationImprove management of the projectSimplify program maintenancePromote reusability
CASE repository acts as:Information repositoryCombines information about organization’s business information and application portfolio Provides automated tools to manage and control accessData dictionaryUsed to manage and control access to information repositoryFacilities for recording, storing and processing resources Useful for cross-referencing
Diagramming toolsAllow you to draw DFDs, ERDs, use case diagrams, case diagramsAllows you to use stepwise refinement in building models (work from high level to low level)
Analysis toolsTypes of analyses depend on methodology used and features of CASE environment
Case documentation generator toolsProvide a method of managing documentationAllow creation of master templates
The Tools of the TradeSoftware engineers need two types of tools1) Analytical tools used in software developmentsuch as stepwise refinement and cost-benefit analysistheoretical tools2) Products that assist the teams of software engineers in developing and maintaining softwareusually termed CASE tools (computer-aided software engineering tools)
The Tools of the TradeSoftware engineers need two types of tools1) Analytical tools used in software developmentsuch as stepwise refinement and cost-benefit analysistheoretical tools2) Products that assist the teams of software engineers in developing and maintaining softwareusually termed CASE tools (computer-aided software engineering tools)
The Tools of the TradeSoftware engineers need two types of tools1) Analytical tools used in software developmentsuch as stepwise refinement and cost-benefit analysistheoretical tools2) Products that assist the teams of software engineers in developing and maintaining softwareusually termed CASE tools (computer-aided software engineering tools)
CASE toolsShould not be considered a silver bullet for project developmentAdvanced CASE tools are complex applications that require significant training and experience to achieve real benefitsOften CASE serves only as a glorified diagramming tool that supports the practices of behavioral and structural modelingHas been shown to be a helpful way to support the communication and sharing of project diagrams and technical specifications (as long as it is used by trained developers who have applied CASE on past projects)2) Enforce disciplineBy helping with the standardization of notations and diagrams
The Tools of the TradeSoftware engineers need two types of tools1) Analytical tools used in software developmentsuch as stepwise refinement and cost-benefit analysistheoretical tools2) Products that assist the teams of software engineers in developing and maintaining softwareusually termed CASE tools (computer-aided software engineering tools)
Limitations in flexibility of documentationDocumentation templates provided may not match organization’s templates3) CostsPurchase price is between $5,000 and $15,000 per year to provide CASE tools to one systems analystTraining => Very complex tools
CASE Tools are the fourth generation tools being in an era of technology the things become more easier with the help of these tools we just need to give the right input.
