The document discusses several approaches to software quality assessment including the ISO 9126 standard, OTSO, CRE, PORE, and Opal. It notes that the approaches focus on both internal and external quality metrics across areas like functionality, reliability, usability, and maintainability. Specific phases and processes are described for the OTSO, CRE and PORE approaches.

1. Nitin Reddy Katkam
nitin@knreddy.com
www.nitinkatkam.com

2.  Many different ways to go about it
 ISO 9126 standard
 OTSO
 CRE
 PORE
 Opal

3.  Focuses on
 Quality
▪ Functionality
▪ Reliability
▪ Usability
▪ Efficiency
▪ Maintainability
▪ Portability
 External & internal metrics
 Metrics themselves

4.  OTSO = Off the shelf option
 Phases
Search Screening Evaluation Analysis Deployment Assessment

5.  CRE = COTS-based Requirements
Engineering
 Phases
Identification Description Evaluation Acceptance

6.  PORE = Procurement-Oriented Requirements
Engineering
 Approach
 Iterative
 Template-based
▪ Requirements from product supplier data
▪ Requirements from supplier-led demo
▪ Requirements acquired from product exploration

7.  Phases
Identify goals Preparing
Selecting
& call for
best bid
requirements tenders