Rational Application Development

• Products of IBM
• IDE for Java
• Eclipse
• Notepad++
• Rational Rose
• Eclipse Based IDE
• Terms associated with RAD
• Workbench
• Perspective
• View
• Palette
• Rational application Developer
• Different Logics in an application
• Presentation logic
• Business logic
• Data access logic
• Some frameworks of languages that helps in rational application development
• Java
• Struts
• Hibernate
• Spring
• PHP
• Symphony
• Cake Php
• Zend
• Setters and getters are useful for individual elements.
• Application building using RAD
• File-> New project-> Java project
• Put project name
• Select workspace
• Select execution environment
• Some oops practice is used in rational application development
• Inheritance
• Association
• Aggregation
• Composition
• Instantiation
• Enterprise Applications are used to simplify and automate the process of enterprise resource planning.
• RAD 7.0
• HTTP
• Request headers
• Client sends info to the server.
• Response headers
• Server sends response to the client.
• Http methods
• Get/Post/Put/Delete
• Steps to create rational models
• Create physical model
• Contains physical hardware components
• Create logical model
• Contains logical components at different locations interlinked with each other.
• Provide realisation for infrastructure in logical model.
• Provide realisation for application components.
• Provide realisation for physical model components to test infrastructure.
• Reverse engineer UML model into Java classes
• Rapid application development comes with IBM webSphere application server.
• Business Logic
• Business, logic or domain logic is the part of the program that encodes the real world business rules That determine how data can be created, stored and changed
• Business rules contains following logic
• Everyday logic
• Expression logic (If/then, else when/If)
• Expression logic may include conditional constraints, Pre/Post conditions et cetera.
• A good business logic, maintains efficiency, consistency and complexity.
• A Transaction script organises this business logic by procedures, where each procedure handles a single request from the presentation.
• A transaction script has a controller which handles the request Using a handler which processes data received from a database.
• A combination of interval transaction scripts constitutes a domain model.
• Prescribes How business objects Interact with one another.
• Business logic is the portion of an enterprise system which determines how data is transformed or calculated and how it is routed to people or software.
• For example, for one, e-commerce site A business logic can be allowing visitors to add items to shopping cart, specify a shopping address, supply payment information and generate orders.
• A business logic of a cash to order generation of a product may include workflow such as follows
• A sequence of events during checkout, asking, shipping, address, billing, address, payment method and confirm order et cetera.
• Business rule
• A business rule is a rule that defines All constraints, some aspect of the business and always resolves to either true or false.
• Business rules, describe the operations, definitions and constraints that apply to an organisation.
• Business rules can apply to people, processes, corporate behaviour and computing systems in an organisation And are put in place to help the organisation achieve its goals.