Software Engineering Institute Carnegie Mellon

Enterprise Framework for the Disciplined Evolution of Legacy Systems

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REPORT DOCUMENTATION PAGE

Form Approved

OMB No. 0704-0188

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1. agency use only (leave blank)
  1. report date

October 1997

3. report type and dates covered

Final
  1. title and subtitle

Enterprise Framework for the Disciplined Evolution of Legacy Systems

5. funding numbers

C — F19628-95-C-0003
  1. author(s)

John K. Bergey, Linda M. Northrop, Dennis B. Smith

 

7. performing organization name(s) and address(es)

Software Engineering Institute
Carnegie Mellon University
Pittsburgh, PA 15213
  1. performing organization
    report number

CMU/SEI-97-TR-007

9. sponsoring/monitoring agency name(s) and address(es)

HQ ESC/AXS
5 Eglin Street
Hanscom AFB, MA 01731-2116
  1. sponsoring/monitoring
    agency report number

ESC-TR-97-007

11. supplementary notes

12.a distribution/availability statement

Unclassified/Unlimited, DTIC, NTIS

12.b distribution code
  1. abstract (maximum 200 words)

Many organizations are planning to "migrate" their legacy systems to distributed open system environments or a single product line of systems. Many of these efforts are often less than successful because they concentrate on a narrow set of software issues without fully considering a broader set of enterprise-wide management and technical issues. This report describes an enterprise framework that characterizes the global environment in which system evolution takes place and provides insight into the activities, processes, and work products that shape the disciplined evolution of legacy systems. Exemplary checklists are included to identify critical enterprise issues corresponding to each of the framework’s elements. Preliminary results indicate that the enterprise model is a useful tool for probing and evaluating planned and ongoing system evolution initiatives. The model serves to draw out important global issues early in the planning cycle and provides insight for developing a synergistic set of management and technical practices to achieve a disciplined approach to system evolution.
  1. subject terms

legacy systems, product line systems, system evolution

15. number of pages
51

 

16. Price Code

17. security classification
of report

UNCLASSIFIED

18. security classification
of this page

UNCLASSIFIED

19. security classification
of abstract

UNCLASSIFIED

20. limitation of abstract

UL

NSN 7540-01-280-5500

 

 

Standard Form 298 (Rev. 2-89)
Prescribed by ANSI Std. Z39-18
298-102