University:
Anglia Ruskin University
Course:
BSE1300 | Software Engineering
Academic year:

2021
Views:

468

Pages:

4
Author:

Sharookh N.

ANALYSIS MODELS-Data Modelling software Engineering ___ Notes DATA MODELING: ● Analyzes data objects without regard to processing ● Concentrates on the data domain ● Develops a model at the customer's level of abstraction ● Shows relationships between data objects A RELATIONSHIP: WHAT IS IT? ● There are various ways in which data objects are related to one another. ○ Because the two objects are related, a connection is made between the person and the car. ○ A individual has auto insurance and owns a vehicle ○ The ownership and insurance status of a vehicle deﬁne the pertinent relationships between the vehicle and its owner. ○ There may be multiple examples of a relationship; ● There are numerous ways in which objects can be related. Modeling Based on Class Class-based modeling represents: ● Objects that the system will manipulate; ● Operations (also called methods or services) that will be applied to the objects to effect the manipulation; ● Relationships (some hierarchical) between the objects; ● Collaborations that occur between the deﬁned classes. The elements of a class-based model include classes and objects, attributes, operations, CRC models, collaboration diagrams, and packages. CRC CARDS ● Stands for Class, Responsibilities, and Collaborators is the acronym for the framework Cunningham, Wilkerson, and Beck created. ● Classes can be identiﬁed, as well as their duties, using CRC. PARTNERSHIPS ● An object can either achieve a given task on its own or it can need the help of other objects. ● In the event that it needs the help of other objects, it must work together with those objects in order to complete its task. Noun-Phrase Approach ● In general, nouns and verbs provide information about classes and procedures, respectively. 1. Convert plurals to singular and enumerate every term. 2. Sort them into three groups. 1. Pertinent courses 2. Ambiguous learning environments 3. Irrelevant courses—delete them 3. Examine classes that are duplicates. 4. Investigate the categories that employ descriptive terms. ● If the descriptive term implies an additional behavioral aspect, establish a fresh category. 5. Look into the possible characteristics. ● They are just for the sake of reference. 6. Review the objective of the category. ● Each category must have an objective.Get rid of it if we can't develop a statement of purpose. Deﬁning Characteristics: ● A class's characteristics are what make it up for consideration in the analysis model. ● create two distinct courses for baseball players who play professionally. ○ Name, position, batting average, ﬁelding %, years played, and games played may be important information for playing statistics software. ○ Average salary, credit toward complete vesting, selected pension plan options, mailing address, and similar information are entered into the Pension Fund software.