click below
click below
Normal Size Small Size show me how
405 Exam2
Question | Answer |
---|---|
Software Quality | defined as an effective software process applied in a manner that creates a useful product that provides measurable value for those who produce it and those who use it. |
Points of Software Quality | An effective software process establishes the infasructure, a useful product delivers the content, functions, and features, and adds value for both the producer and the user of the software product |
Gavins Quality Dimensions Define | Gavin suggest that quality should be considered by taking a multidimensional viewpoint that begins with an assessment of conformance and terminates with a aesthetic view. |
Gavins quality points | • Performance quality • Feature quality • Reliability • Conformance • Durability • Serviceability • Aesthetics • Perception |
ISO Define | A standard developed to identify key quality attributes for computer software |
ISO Factors | • Functionality • Reliability • Usability • Efficiency • Maintainability • Portability |
Good Enough Software | Software that delivers high-quality functions and features that users desire, but at the same time it delivers other more obscure or specialized functions and features that contain known bugs |
Good Enough Software points | • Producing software using a “good enough” attitude may leave your production team exposed to serious liability issues resulting from product failures after release • Time-To-Market may trump better quality, Companies do it every day. |
Risk of having poor quality software? | • Negligence and Liability • Quality and Security |
Quality Assurance(Computer Overview) | Establishes the infrastructure that supports solid software engineering methods, rational project management, and quality control actions. • Auditing and reporting functions |
Quality Control | Software engineering actions that help to ensure that each work product meets its quality goals. Models are reviewed to ensure that they are complete and consistent. |
Effectiveness of Review | • Point out needed improvements in the product of team • Confirm parts of a product in which improvement is not desired or not needed • Achieve technical work of more uniform or more predictable, then quality than can be achieved without reviews |
Types of Reviews | Informal Review Formal Technical Review Sample Driven Reviews |
Informal Review | • Informal Review: simple desk check of work or casual meeting usually using checklists. An example could be pair programming |
Formal Technical Review | • Formal Technical Reviews: ensures quality of software by uncovering errors in function. Involves 3 to 5 people and advance preparation to check requirements and make projects more manageable. |
Sample Driven Reviews | • Sample Driven Reviews: Determine errors by sampling all software engineering products. FTR with a focus on work products based on sampling results. |
Software Quality Assurance Define | An umbrella activity, Planned and systematic pattern of actions required to ensure high quality in software |
Software Quality Assurance points | Standards Testing Error/Defect collection and analysis Changes Management Education Vendor management Security management |
Six Sigma | Defines customer requirements, deliverables, and project goals via well defined methods of customer communication. • Define • Measure • Analyze • Improve • Control • Design • Verify |
Software Reliability | the probability of failure free operation of a computer program in a specified environment for a specified time period. Software reliability problems can usually be traced back to errors in design or implementation |
Test Strategies(conducted by developer or large independent group) | starts with conducting technical reviews and at the component level and works outward to the computer system. Different techniques are appropriate for different software at different points of time. Debugging is different but must be accommodated. |
Unit Testing | makes heavy use of testing techniques that exercise specific control paths to detect errors in each software component individually |
Integration Testing | focuses on issues associated with verification and program construction as components begin interacting with one another |
Validation Testing | provides assurance that the software validation criteria (established during requirements analysis) meets all functional, behavioral, and performance requirements |
Systems Testing | verifies that all system elements mesh properly and that overall system function and performance has been achieved |
Object Oriented Testing | Requires definition of testing to be broadened to include error discovery techniques applied to OOA and OOD models. Test cases must take into account unique OO software. Should be reviewed for correctness, completeness, and consistency. |
Object-Oriented Unit testing | called class testing in OO circles, components being tested are classes and their behaviors not modules |
OO integration testing | as classes are integrated into the architecture regression tests are run to uncover communication and collaboration errors between objects through different threads, independent classes, and collaborating classes. |
OO Validation Testing | testing strategy where the system as a whole is tested to uncover requirement errors, uses conventional black box testing methods |