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ITLE(IncludeSecurityClassification)
•aringhouseforSoftwareReuse: LessonsLearnedfromtheRAPID/DSRSInitiatives
ERSONALAUTHOR(S) Harms,GerardR.andVanHook,TinaH.
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er'sThesis From To September1992 49
JPPLEMENTARYNOTATION
iewsexpressedinthisthesisarethoseoftheauthoranddonotreflecttheofficialpolicyorpositionoftheDepartmentofDefenseortheU.S.
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LD GROUP SUBGROUP SoftwareReuse, CodeReuse, ReusableSoftwareComponents
BSTRACT(continueonreverseifnecessaryandidentifybyblocknumber)
mationSystemsexecutiveswithintheDepartmentofDefense(DoD)activitiesarebeingchallengedtodevelopinnovativeways inwhich
mationtechnologycancontributetothestreamliningofDoDorganizations. SoftwareReuseisakeystrategyindevelopinginformation
msthatwillmeetthefutureneedsofDoDorganizations. Thisthesisexaminestheconcepts,implementationstrategies, andissuesrelating
icreationofaclearinghousetofacilitateandpromotesoftwarereuse. Specifically itstudiestheDefenseSoftwareRepositorySystem
\'S),aDoDversionofthe ReusableAdaProductsforInformationSystemsDevelopment(RAPID)effort.
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A
Clearinghouse for Software Reuse:
Lessons Learned from the RAPID/DSRS Initiatives
by
Gerard R. Harms
Lieutenant Commander, United States Navy
B.S., University of Villanova, 1978
and
Tina H. Van Hook
Lieutenant, United States Navy
B.B.A., University of San Diego, 1985
Submitted in partial fulfillment
of the requirements for the degree of
MASTER OF SCIENCE IN INFORMATION SYSTEMS
from the
NAVAL POSTGRADUATE SCHOOL
September 1992
ABSTRACT
Information systems executives withinDepartment ofDefense (DoD) activities are
being challenged to develop innovative ways in which information technology can
contribute to the streamlining of DoD organizations. Software reuse is a key strategy in
DoD
developing information systems that will meet the future needs of organizations.
This thesis examines the concepts, and issues relating to the creation of a clearinghouse
to facilitate and promote software reuse. Specifically it studies the Defense Software
Repository System (DSRS), a DoD-wide version ofthe Army Reusable Ada Products for
Information Systems Development (RAPID) effort.
111
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TABLE OF CONTENTS
I. SOFTWARE REUSE 1
A. INTRODUCTION 1
B. PURPOSE OF RESEARCH 1
C. RESEARCH METHODOLOGY 2
D. RESULTS OF RESEARCH 2
E. APPENDIX 3
LIST OF REFERENCES 35
INITIAL DISTRIBUTION LIST 47
IV
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SOFTWARE REUSE
I.
INTRODUCTION
A.
This thesis is part of a larger study sponsored by the Director of Defense
Information (DDI) in which a series of case studies are being conducted to focus on the
sound practices ofMIS implementation in DoD. This particular case study examines the
concept of software reuse and focuses on the DoD Defense Software Repository System
(DSRS) initiative. DSRS is a DoD version of the Army's Reusable Ada Products for
Information Systems Development, and their methodology for software reuse. It will
also identify critical success factors in implementing a DoD-wide policy on code reuse.
PURPOSE OF RESEARCH
B.
The DoD Corporate Information Management (CIM) initiative promotes the use of
Information Technology to improve business processes and the management of
information resources. Software reuse has been identified by the Office of Defense
DoD
Information as a key strategy intended to help respond to variable threats in a
rapidly changing environment with less resources. The integration of software reuse
practices into lifecycle development ofDoD systems will be a critical factor in achieving
significant reduction in the amount of time required to develop complex systems.
Equally important is the anticipated increase in system reliability and decrease in dollars
spent for systems maintenance following implementation. The DSRS goal is to obtain
general purpose, adaptable software components that have maximum potential for reuse.
They have established procedures and guidelinesto certify reusable software components.
RESEARCH METHODOLOGY
C.
This thesis is a case study that reviews recent literature on software reuse, conducts
on site field interviews with CIM, RAPID, and DSRS personnel, and derives lessons
learned from the RAPID/DSRS effort achieved to date.
This study focuses on the RAPID/DSRS effort and the methodology for software
reuse. RAPID/DSRS provides a comprehensive and structured framework for software
reuse that could be of potential benefit to all users. Procedures to certify reusable
software components proposed by RAPID will also be discussed.
D. RESULTS OF RESEARCH
The results of this research, and all references are contained in the Appendix.
