ISO/IEC 26557:2016 ソフトウェアおよびシステムエンジニアリング—ソフトウェアおよびシステム製品ラインの変動メカニズムの方法とツール | ページ 6

3.1

application configuration

derivation for a member product specific executables from domain assets in realization (3.10)

Note 1 to entry: The specific configuration of an application is the binding (3.3) results for the variation points (3.19) with the selected variants (3.17) .

3.2

aspect

special consideration within product line engineering process groups and tasks to which we can associate specialized methods and tools

3.3

binding

task for making a decision (3.7) on relevant variants (3.17) using domain variability model (3.16) and decision tables (3.8)

3.4

binding time

moment of variability resolution

Note 1 to entry: The choice of binding time is independent from variability modelling. It is the consequence of decisions (3.7) made from requirements through run time (3.11) . Demands for flexibility and the support of tools allow late binding times or even the use of variable binding times.

3.5

binding time decision

selection for variability (3.13) defined in platforms in accordance with the functional distinction between variability in time and variability in space

3.6

configurability

degree of how well a variability mechanism (3.14) supports the configuration of a member product

3.7

decision

types of statements in which a choice between two or more possible outcomes controls which set of actions will result

3.8

decision table

table that specifies decision variables

Note 1 to entry: It also includes rules, constraints and relevancy among variables.

3.9

post-compile time

collective name for link time and load time that are right after the compilation of components

3.10

realization

stage for detailed design and construction

3.11

run time

stage that a member product is executed

Note 1 to entry: Components can be developed, compiled, linked and loaded separately. Only at run time are they combined into a working system.

3.12

texture

architectural texture

collection of common development rules and constraints for realizing the applications of a product line

3.13

variability

characteristics that may differ among members of a product line

Note 1 to entry: The differences between members may be captured from multiple viewpoints such as functionality, quality attributes, environments in which the members are used, users, constraints and internal mechanisms that realize functionality and quality attributes.

Note 2 to entry: It is important to distinguish between the concepts of system and software variability and product line variability. Any system partially or fully composed of software can be considered to possess software variability because software systems are inherently malleable, extendable or configurable for specific use contexts. Product line variability is concerned with the variability that is explicitly defined by product management. This document is primarily concerned with product line variability.

3.14

variability mechanism

variability representation/implementation technique for the product line variability

Note 1 to entry: It deals with variabilities based on the binding time (3.4) at the specific life cycle stage.

3.15

variability mechanism operationalization

VMO

adequate provision or binding (3.3) of variability mechanisms (3.14) at each specific domain or application engineering life cycle stage

3.16

variability model

explicit definition for product line variability

Note 1 to entry: It introduces variation points (3.19) , types of variation for the variation points, variants (3.17) offered by the variation points, variability dependencies and variability constraints. Variability models may be orthogonal to or integrated in other models such as requirements or design models. There are two types of variability models: application variability models and domain variability models.

3.17

variant

option or an alternative that may be used to realize particular variation points (3.19)

Note 1 to entry: One or more variants should correspond to each variation point to represent V_VP relationship. Selection and binding (3.3) of variants for a specific product determine the characteristics of the particular variability (3.13) for the product.

3.18

variant selection

decision making for a choice of a variant (3.17) in a variation point (3.19)

Note 1 to entry: binding (3.3) , variability resolution.

3.19

variation point

representation corresponding to particular variable characteristics of products, domain assets and application assets in the context of a product line

Note 1 to entry: Variation points show which of the product line element varies. Each variation point can have multiple V_VP relationships.