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Enterprise Programming. By J Pearce. Enterprise Software. Shipping. Sales. Inventory. Customer Support. HR. Challenges. Scalability Distributivity Connectivity Integrating legacy& multi-vendor systems Common needs Security Transaction Processing. E-Commerce.
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Enterprise Programming By J Pearce
Enterprise Software Shipping Sales Inventory CustomerSupport HR
Challenges • Scalability • Distributivity • Connectivity • Integrating legacy& multi-vendor systems • Common needs • Security • Transaction Processing
E-Commerce • The ability to perform online transactions: • Selling • Trading • Negotiating
E-Commerce Models • Storefronts • Auctions • Portals • Dynamic Pricing Models • Trading & Lending Models • B2B Exchanges & Services • Online News, Travel, Entertainment, Education
3 Important Server-Side Design Patterns • Model-View-Controller • Multi-Tier • Container-Component
Model-View-Controller Architecture • Model: Managing data and logic • Controller: Executes user commands • View: Displays data • Principle: Application logic should independent of presentation logic.
Multi-Tier Architectures • Single Tier (Mainframe) • Two Tier (Client-Server) • Three Tier (Application Servers) • Four Tier (Web-based) • N-Tier
Container-Component Architectures • Component: A semi-autonomous object known to clients only through the interfaces it implements and the conventions it conforms to. • Container: A program that provides an execution environment and lifecycle support for components.
Component Models • ActiveX, COM, DCOM • Applets • Servlets • Java Beans • Microsoft.NET • Enterprise Java Beans (EJB)
J2XE Platform Specifications • J2SE: Client platform • J2ME: PDA platform • J2EE: Enterprise server platform
J2EE APIs • DBase Connectivity (JDBC) • Naming & Directory Interface (JNDI) • Messaging Service (JMS) • Transaction Processing API (JTA) • Transaction Services (JTS) • JavaMail • Interface Definition Language (Java IDL)
J2EE Technologies • Remote Method Invocation (RMI) • Servlets • Java Server Pages (JSP) • Enterprise java Beans (EJB) • Containers (Web, Applet, Enterprise)
J2EE Roles • Application Client • Web Page Designer • Container Developer • Component Developer • Application Assembler • Application Deployer • Application Administrator
References • Developing Enterprise Java Applications with J2EE and UML; Ahmed & Umrysh; A-W.