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Explore the different types of enterprise systems, technologies, and integration objectives in this comprehensive guide. Learn about the structure, technologies, and objectives of enterprise system design.
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Technology Landscape and Enterprise Objectives B.Ramamurthy Ch.1,2
Introduction • We will study the various different system that we will encounter in a typical enterprise system – Ch.1 • We will also study the general enterprise integration objectives – Ch.2 Ch.1,2
Types of Systems (1) • Legacy systems: • Many local solutions to enterprise problems. • Many models, platforms, languages, and proprietary software packages. • Fragmented systems spread around the enterprise. • Example: PC-based payroll system for a local branch of a large banking system. • Data warehouse: • Collection of business data to provide analytical processing, supporting queries and reporting. • Example: Trend in sales with reference to month to enable planning. • Electronic commerce: • Internet and WWW have enabled business to reach their customers directly (B2C) and exchange data and deal with business partners efficiently (B2B). Ch.1,2
Types of Systems (2) • Web-enabled applications: • Web enabling improves accessibility through the use of browsers. • Workflow Management systems: • Business process management systems. • Move from batch to event-based systems • Business transactions are processed as they occur. • Transactions can be handled with different priorities, authorized based on different criteria, and serviced with different specialized skills. • Provides the means to formalize processes, enforce compliance, monitor performance, and introduce process improvements. Ch.1,2
Technologies • Study the technologies in terms of Web-tier, (business) logic tier, data tier • Unified Modeling Language (UML) for design purposes. • Provides 12 different models for various phases of software development. • Model Driven Architecture (MDA): design tool. • Provides the ability to model applications as Platform Independent Model (PIM). • Java Server Pages (JSP) and servlets: • web presentation/logic Ch.1,2
Technologies • eXtensible Markup Language (XML): • Markup language with customizable tag for exchange of information among applications. • CORBA from Object Management Group(OMG): • Enables robust, interoperable distributed objects and protocols. • Component Technology: • Evolution of object technology. • Provides extensive ability to manage objects as components. • Example: Enterprise Java beans and COM objects Ch.1,2
Technologies (contd.) • Open data base connectivity(ODBC): standard protocol to access data bases. JDBC is a java implementation. • Relational data base systems: RDBMs. • Provides the persistence needed for application data. • Relations represented by tables of records of data. • Primary key uniquely selects a record. • Can combine tables on attributes, select only rows and columns needed. • Example: Oracle 9.2 Ch.1,2
Enterprise Application Integration (EAI) • EAI is the practice of linking many legacy systems, commercial-of the-shelf (COTS) systems and current systems to consolidate the operations in an enterprise. • Simple solution is the store-forward of data between systems. • Where data are exchanged between many sources and many destinations a message broker facility is used to direct the flow. See fig.1.2 Ch.1,2
EAI (contd.) • EAI provides for exchange of information as events occur rather than periodic transfer of files. • It streamlines business processes. • It provides the flexibility of routing of messages to meet new requirements for information, including operations monitoring and the initiation of corrective action on a timely basis. Example: Project 1’s TPS integrated with IncidentWeb. Ch.1,2
Enterprise System Pyramid Virtual Enterprise Corporate Domain: Books sales Business system domains: B2C Business Process: login to purchase Business applications: Shop front Application components: pricing, email Ch.1,2
Objectives • Adaptable systems and processes • Streamlined processes • Management information • Support for electronic commerce • Integrated security • Replaceable components • Reliable and recoverable systems • Scalability Ch.1,2
Summary • We studied • Types of enterprise systems, • A representative set of technologies, • Enterprise application integration, • Structure of enterprise systems • Objectives of enterprise system design. • Your task: Casual reading of Chs. 1 and 2. Ch.1,2