krotmanhattan.blogg.se - Hierarchical and sequential process modeling tools

#HIERARCHICAL AND SEQUENTIAL PROCESS MODELING TOOLS SOFTWARE#
#HIERARCHICAL AND SEQUENTIAL PROCESS MODELING TOOLS SERIES#

#HIERARCHICAL AND SEQUENTIAL PROCESS MODELING TOOLS SOFTWARE#

SRS is useful if the software system is developed by the outside contractor.

SRS indicates to a developer and a customer what is implemented in the software.

It shows the detail about the performance of expected system.

The software requirement specification is an official document.

This document is created before starting the development work.

The requirements are specified in specific format known as SRS.

To verify the accuracy and consistency review the behavioral model.

Construct a state diagram for the system.

Identify the event and understand the relation between the specific event.

Evaluate all the use cases to completely understand the sequence, interaction within the system.

Steps for creating behavioral patterns for requirement modeling as follows: If the class cannot identify itself, then it needs to interact with another class.īehavioral patterns for requirement modelingBehavioral model shows the response of software to an external event.

Collaborations are identified and determined when a class can achieve each responsibility of it.Responsibilities are the attributes and operations that are related to the class.It consists of information about sub classes and super class. Class is an object-oriented class name.It provides a simple method for identifying and organizing the classes that are applicable to the system or product requirement.The CRS stands for Class-Responsibility-Collaborator.The operation monitors the objects for the occurrence of controlling an event.The operations manipulate the data like adding, modifying, deleting and displaying etc.The operations are characterized into following types: The operations define the behaviour of an object. Structures: The sensors, computers are defined a class of objects or related classes of objects.Īttributes are the set of data objects that are defining a complete class within the context of the problem.įor example, 'employee' is a class and it consists of name, Id, department, designation and salary of the employee are the attributes.Places: The manufacturing floor or loading dock from the context of the problem and the overall function of the system.Organizational units: The division, group, team are suitable for an application.Roles: The people like manager, engineer, salesperson are interacting with the system.

#HIERARCHICAL AND SEQUENTIAL PROCESS MODELING TOOLS SERIES#

Occurrences or events: A property transfer or the completion of a series or robot movements occurs in the context of the system operation.

Things: The reports, displays, letter, signal are the part of the information domain or the problem.

External entities: The system, people or the device generates the information that is used by the computer based system.

The elements of the class based model consist of classes and object, attributes, operations, class – responsibility - collaborator (CRS) models.Ĭlasses are determined using underlining each noun or noun clause and enter it into the simple table.

Class based modeling represents the object.

The content of process specification consists narrative text, Program Design Language(PDL) of the process algorithm, mathematical equations, tables or UML activity diagram.

The process specification is used to describe all flow model processes.

A short term for process specification is PSPEC.

State diagram shows the transition from one state to another state if a particular event has occurred.

The state diagram includes states, transitions, events and activities.

The state diagram in CSPEC is a sequential specification of the behaviour.

It represents the behaviour of the system.A short term for control specification is CSPEC.An event is implemented as a boolean value.įor example, the boolean values are true or false, on or off, 1 or 0.The applications process the information in specified time.The application creates control information instated of reports or displays.Large class applications require a control flow modeling.It also called as 'context level diagram'. Transformation are represented by circles called as bubbles. The data objects are represented by labeled arrows.The data objects are flowing within the software and transformed by processing the elements.It is used to represent information flow. Flow Oriented ModelingIt shows how data objects are transformed by processing the function. Requirement modeling strategies Following are the requirement modeling strategies:Ģ.