McCall Software Quality Model in Software Quality Assurance
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How Valletta helped healthcare SaaS to transform QA and compliance to grow wi...
How Valletta helped healthcare SaaS to transform QA and compliance to grow wi...Egor Kaleynik This case study explores how we partnered with a mid-sized U.S. healthcare SaaS provider to help them scale from a successful pilot phase to supporting over 10,000 users—while meeting strict HIPAA compliance requirements.
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How to Batch Export Lotus Notes NSF Emails to Outlook PST Easily?
How to Batch Export Lotus Notes NSF Emails to Outlook PST Easily?steaveroggers Migrating from Lotus Notes to Outlook can be a complex and time-consuming task, especially when dealing with large volumes of NSF emails. This presentation provides a complete guide on how to batch export Lotus Notes NSF emails to Outlook PST format quickly and securely. It highlights the challenges of manual methods, the benefits of using an automated tool, and introduces eSoftTools NSF to PST Converter Software — a reliable solution designed to handle bulk email migrations efficiently. Learn about the software’s key features, step-by-step export process, system requirements, and how it ensures 100% data accuracy and folder structure preservation during migration. Make your email transition smoother, safer, and faster with the right approach.
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McCall Software Quality Model in Software Quality Assurance
- 1. BY: SUNDAS SHABBIR Ahmed Kaim Khani 1
- 2. Software Quality: •Conformance to the users Requirements. Quality Models: •Software Quality is described by specific quality models. Software Quality Models are: McCall’s Model •Boehm Model •FURPS/FURPS+ •Dromey quality Model •ISO quality Model FURPS BY: SUNDAS SHABBIR Ahmed Kaim Khani 2
- 3. Introduction: Jim McCall produced this model for the US Air Force and the intention was to bridge the gap between users and developers. McCall Model Developed in 1967-7, •One of the first , Oldest software quality model. •Started with volume of 55 quality characteristics ,called them “factors” •Quality Factors was compressed into 11 main factors. •McCall Tried to map user view developer’s priorities. BY: SUNDAS SHABBIR Ahmed Kaim Khani 3
- 4. McCall Quality Model: Three 3 major perspectives. 1. Product Revision (ability to under go Changes) Maintainability, Flexibility, Testability. 2.Product Transition (adaptability to new environments). Portability, Reusability, Interoperability. 3.Product Operations( basic Operational characteristic). Correctness, Reliability, Efficiency, Integrity, Usability BY: SUNDAS SHABBIR Ahmed Kaim Khani 4
- 5. McCall’s Quality Model Tree BY: SUNDAS SHABBIR Ahmed Kaim Khani 5
- 6. Also known as McCall’s Quality Model Triangle BY: SUNDAS SHABBIR Ahmed Kaim Khani 6
- 7. McCall’s Quality Model: Based on 3 types of Characteristics with hierarchical dependency: 1. Factors(to specify): external software view for users. 2. Criteria(to build): internal software view for developers. 3. Measures/metrics (to control): are used for software measurement. BY: SUNDAS SHABBIR Ahmed Kaim Khani 7
- 8. 1.Product Operations •Correctness, the functionality matches the specification. or Does it do what customer wants?(meeting specification) •Reliability, the extent to which the system fails. or Does it do it accurately all of the time. (successful performance) BY: SUNDAS SHABBIR Ahmed Kaim Khani 8
- 9. 1.Product Operations conti.. •Efficiency, system resource (including cpu, disk, memory, network) usage. or Does it quickly solve the intended problem?(enough computing resources) •Integrity, protection from unauthorized access. or is it Secure? (access limitation to people) •Usability, ease of use Or Can I run it? (efforts in learning/operating) BY: SUNDAS SHABBIR Ahmed Kaim Khani 9
- 10. 2.Product revision •Maintainability, the ability to find and fix a defect. Or Can it be fixed?(fixing bugs and errors) •Flexibility, the ability to make changes required as dictated by the business. Or Can it be changed?(modifying an operational program) •Testability, the ability to Validate the software requirements. Or Can it be tested? (ensuring performance) BY: SUNDAS SHABBIR Ahmed Kaim Khani 10
- 11. 3. Product transition •Portability, the ability to transfer the software from one environment to another. Or Can it be used on another machine?(Platform dependence). •Reusability, the ease of using existing software components in a different context. Or Can part of it be reused? (generic coding). •Interoperability, the extent, or ease, to which software components work together. Or Can it interface with other system (coupling system) BY: SUNDAS SHABBIR Ahmed Kaim Khani 11
- 12. Relationship between Quality Factors and Quality Criteria •Each quality factor is positively influenced by the set of quality criteria, And the same quality criterion impacts a number of quality factors. Some quality factors positively impact others. •An effort to improve the correctness of a system will increase its reliability. BY: SUNDAS SHABBIR Ahmed Kaim Khani 12
- 13. BY: SUNDAS SHABBIR Ahmed Kaim Khani 13
- 14. BY: SUNDAS SHABBIR Ahmed Kaim Khani 14
- 15. BY: SUNDAS SHABBIR Ahmed Kaim Khani 15