The Quaid Software House is using last technology in every development of software.The table below summarizes each of the six quality characteristics. With these characteristics, the answer to the question "What is better software?" becomes much more precise. Using these characteristics, software engineers can assess software products for strengths and weaknesses. In addition, these quality characteristics can also be used to compare and contrast the relative merits of software development paradigms.
In this case, software engineers do not refer to the paradigm itself as reliable or portable:
Realibility: The frequency and criticality of software failure, where failure is an unacceptable effect or behavior occurring under permissible operating conditions.
Correctness: The degree with which software adheres to its specified requirements.
Reusebility: The ease with which software can be reused in developing other software.
Maintainbility: The ease with which changes can be made to satisfy new requirements or to correct deficiencies.
Portability: The ease with which software can be used on computer configurations other than its current one.
Efficiency: The degree with which software fulfills its purpose without waste of resources.
Abstraction - Abstraction is the process or result of generalization by reducing the information content of a concept or an observable phenomenon,
typically in order to retain only information which is relevant for a particular purpose.
Refinement - It is the process of elaboration. A hierarchy is developed by decomposing a macroscopic statement of function in a step-wise fashion until programming language statements are reached. In each step, one or several instructions of a given program are decomposed into more detailed instructions. Abstraction and Refinement are complementary concepts.
Modularity - Software architecture is divided into components called modules.
Software Architecture - It refers to the overall structure of the software and the ways in which that structure provides conceptual integrity for a system. Good software architecture will yield a good return on investment with respect to the desired outcome of the project, e.g. in terms of performance, quality, schedule and cost.
Control Hierarchy - A program structure that represents the organization of a program component and implies a hierarchy of control.
Structural Partitioning - The program structure can be divided into both horizontally and vertically. Horizontal partitions define separate branches of modular hierarchy for each major program function. Vertical partitioning suggests that control and work should be distributed top down in the program structure.
Data Structure - It is a representation of the logical relationship among individual elements of data.
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