second generation case tools and their architecture

8/6/2019 Second Generation CASE Tools and Their Architecture

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By:

Chetana M.S

III sem [MS]

M1


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Slide 1

M1 Mis.Chatana, 11/27/2007


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` An important feature of the second generation

CASE tool is the direct support of any adapted

methodology.

` It necessitates the function of a CASE

administrator for every organization, who can

tailor the CASE tool to a particular methodology.


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` Intelligent diagramming support

The fact that diagramming techniques are

useful for system analysis and design is well established.

The future CASE tools would provide

help to lay out the diagrams, aesthetically and

automatically.


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` Integration with implementation environmentIt provide integration between design and

implementation.

The term integration implies both combinationandclosure. It combines a variety of different

tools and a spectrum of information in a way

that enables closure of communication among

tools, between people , and across the softwareprocess.


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` Data dictionary standardsThe user would be allowed to integrate many

development tools into one environment. It is

highly unlikely that any one vendor will be able

to deliver a total solution.

A preferred tool would require tuning up for

a particular system. Thus the user would act as

a system integrator. This would be possible only if some standard on data dictionary emerges.


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` Customization supportThe user would be allowed to define new types

of objects and connections. This facility might be

used to build some special methodologies .Ideally it would be possible to specify the

rules of a methodology to a rule engine for

carrying out the necessary consistency checks.


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` A software engineering team uses CASE tools,

corresponding methods, and a process framework

to create a pool of software engineering

information.

` To accomplish this, the following architectural

components must exist:

a database must be created (to store theinformation)


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an object management system must be built ( tomanage changes to the system)

a tools control mechanism must be constructed (to

coordinate the use of CASE tools)

Auser interface must provide a consistent pathway

between actions made by the user and the toolscontained in the environment.


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` The user interface layer : incorporates astandardized interface tool kit with a common

presentation protocol .

The interface tool kit contains software forhuman/computer interface management and a

library of display objects.

Both provide a consistent mechanism for

communication between the interface and

individual CASE tools.


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Fig.Architectural model for the integration framework


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The presentation protocol is the set of guidelines

that gives all CASE tools the same look.

screen layout conventions

menu names and organization

icons

object names

the use of the keyboard and mouse

and the mechanism for tools access are all definedas of the part of the presentation protocol.


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` The tools layer : incorporates a set of tools managementservices with the CASE tools themselves.

Tools management services (TMS) control the behavior

of the tools within the environment.


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if multitasking is used during the execution of one

or more tools, TMS performs multitask

synchronization and communication, coordinates

the flow of information from the repository and object management system in the tools ,

accomplishes security and auditing functions, and

collects metrics on tool usage.


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` The object management layer (OML) performs the

configuration management functions.

software in this layer of the framework

architecture provides the mechanism for toolsintegration.

every CASE tool is plugged into the object

management layer.


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Working in conjunction with the CASE repository ,

the OML provides integration services- a set of

standard modules that couple tools with the

repository.Repository is a thing - a database that acts as

the center for both accumulation and storage of

software engineering information.


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` In addition , the OML provides configuration

management services by enabling the identification

of all configuration objects, performing version

control, and providing support for change , audits,and status accounting.


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` The shared repository layer : is the CASE

database and the access control functions that

enable the object management layer to interact

with the database.Data integration is achieved by the object

management and shared repository layers.


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Thank You

second generation case tools and their architecture

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