Fifth International Conference on Commercial-off-the-Shelf (COTS)-Based Software Systems

2006 ◽  
Keyword(s):  
Software Systems ◽  
International Conference ◽  
Commercial Off The Shelf

The Incremental Commitment Spiral Model for Service-Intensive Projects

2013 ◽  
pp. 94-115
Author(s):  
Supannika Koolmanojwong ◽  
Barry Boehm ◽  
Jo Ann Lane
Keyword(s):  
Web Services ◽  
Process Model ◽  
Software Process ◽  
Business Environment ◽  
Process Models ◽  
Software Systems ◽  
Generation Process ◽  
Software Process Models ◽  
Commercial Off The Shelf ◽  
Spiral Model

To provide better service to customers and remain competitive in the business environment, a wide variety of ready-to-use software and technologies are available for one to “grab and go” in order to build up software systems at a rapid pace. Currently, a wide variety of Web services are available and ready to use for this purpose. Current software process models also support commercial-off-the-shelf (COTS)-based development processes. However, although COTS and Web Services are similar, they are different in many perspectives. On one hand, there are various software process models that support Web services development. Yet there is no process model that supports the project that uses services provided by others. This chapter introduces the Incremental Commitment Spiral Model (ICSM), a new generation process model that provides development guidelines, from exploring a Web service alternative to deployment and maintenance with case studies.

The Incremental Commitment Spiral Model for Service-Intensive Projects

2014 ◽  
pp. 2142-2162 ◽  
Author(s):  
Supannika Koolmanojwong ◽  
Barry Boehm ◽  
Jo Ann Lane
Keyword(s):  
Web Services ◽  
Process Model ◽  
Software Process ◽  
Business Environment ◽  
Process Models ◽  
Software Systems ◽  
Generation Process ◽  
Software Process Models ◽  
Commercial Off The Shelf ◽  
Spiral Model

To provide better service to customers and remain competitive in the business environment, a wide variety of ready-to-use software and technologies are available for one to “grab and go” in order to build up software systems at a rapid pace. Currently, a wide variety of Web services are available and ready to use for this purpose. Current software process models also support commercial-off-the-shelf (COTS)-based development processes. However, although COTS and Web Services are similar, they are different in many perspectives. On one hand, there are various software process models that support Web services development. Yet there is no process model that supports the project that uses services provided by others. This chapter introduces the Incremental Commitment Spiral Model (ICSM), a new generation process model that provides development guidelines, from exploring a Web service alternative to deployment and maintenance with case studies.

Intrusion Tolerance in Information Systems

2011 ◽  
pp. 2239-2243
Author(s):  
Wenbing Zhao
Keyword(s):  
Information Systems ◽  
Software Systems ◽  
Threshold Cryptography ◽  
Software Components ◽  
Intrusion Tolerance ◽  
Confidential Information ◽  
High Expectations ◽  
Intrusion Prevention ◽  
Critical Data ◽  
Commercial Off The Shelf

Today’s information systems are expected to be highly available and trustworthy — that is, they are accessible at any time a user wants to, they always provide correct services, and they never reveal confidential information to an unauthorized party. To meet such high expectations, the system must be carefully designed and implemented, and rigorously tested (for intrusion prevention). However, considering the intense pressure for short development cycles and the widespread use of commercial off-the-shelf software components, it is not surprising that software systems are notoriously imperfect. The vulnerabilities due to insufficient design and poor implementation are often exploited by adversaries to cause a variety of damages, for example, crashing of the system, leaking of confidential information, modifying or deleting of critical data, or injecting of erroneous information into a system. This observation prompted the research on intrusion tolerance techniques (Castro & Liskov, 2002; Deswarte, Blain, & Fabre, 1991; Verissimo, Neves, & Correia, 2003; Yin, Martin, Venkataramani, Alvisi, & Dahlin, 2003). Such techniques can tolerate intrusion attacks in two respects: (1) a system continues providing correct services (may be with reduced performance), and (2) no confidential information is revealed to an adversary. The former can be achieved by using the replication techniques, as long as the adversary can only compromise a small number of replicas. The latter is often built on top of secrete sharing and threshold cryptography techniques. Plain replication is often perceived to reduce the confidentiality of a system, because there are more identical copies available for penetration. However, if replication is integrated properly with secrete sharing and threshold cryptography, both availability and confidentiality can be enhanced.

OPTIMAL COMPONENT SELECTION OF COTS BASED SOFTWARE SYSTEM UNDER CONSENSUS RECOVERY BLOCK SCHEME INCORPORATING EXECUTION TIME

2010 ◽  
Vol 17 (03) ◽  
pp. 209-222 ◽  
Author(s):  
P. C. JHA ◽  
P. K. KAPUR ◽  
SHIVANI BALI ◽  
U. DINESH KUMAR
Keyword(s):  
Execution Time ◽  
Fault Tolerant ◽  
System Development ◽  
Software Systems ◽  
Software System ◽  
Reliability Models ◽  
Development Costs ◽  
Software Modules ◽  
Reduce Development Time ◽  
Commercial Off The Shelf

Computer based systems have increased dramatically in scope, complexity, pervasiveness. Most industries are highly dependent on computers for their basic day to day functioning. Safe & reliable software operations are an essential requirement for many systems across different industries. The number of functions to be included in a software system is decided during the software development. Any software system must be constructed in such a way that execution can resume even after the occurrence of failure with minimal loss of data and time. Such software systems which can continue execution even in presence of faults are called fault tolerant software. When failure occurs one of the redundant software modules get executed and prevent system failure. The fault tolerant software systems are usually developed by integrating COTS (commercial off-the-shelf) software components. The motivation for using COTS components is that they will reduce overall system development costs and reduce development time. In this paper, reliability models for fault tolerant consensus recovery blocks are analyzed. In first optimization model, we formulate joint optimization problem in which reliability maximization of software system and execution time minimization for each function of software system are considered under budgetary constraint. In the second model the issue of compatibility among alternatives available for different modules, is discussed. Numerical illustrations are provided to demonstrate the developed models.

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