14 1 Chapter 14 Database Connectivity and Web Development Database Systems: Design, Implementation, and Management, Seventh Edition, Rob and Coronel

14 2 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel The Web as a Stateless System Stateless system indicates that at any given time, Web server does not know status of any of clients communicating with it –Client and server computers interact in very short “conversations” that follow request-reply model

14 3 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Extensible Markup Language (XML)

14 4 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Document Type Definitions (DTD) and XML Schemas

14 5 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Document Type Definitions (DTD) and XML Schemas (continued)

14 6 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Document Type Definitions (DTD) and XML Schemas (continued)

14 7 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Document Type Definitions (DTD) and XML Schemas (continued)

14 8 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel XML Presentation

14 9 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel XML Presentation (continued)

14 10 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel XML Presentation (continued)

14 11 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel XML Applications B2B exchanges Legacy systems integration Web page development Database support Database metadictionaries XML databases XML services

14 12 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Summary Database connectivity refers to the mechanisms through which application programs connect and communicate with data repositories Microsoft database connectivity interfaces are dominant players in the market and enjoy the support of most database vendors Native database connectivity refers to the connection interface that is provided by the database vendor and is unique to that vendor

14 13 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Summary (continued) Object Linking and Embedding for Database (OLE- DB) is a database middleware developed with the goal of adding object-oriented functionality for access to relational and nonrelational data Database access through the Web is achieved through database-to-middleware software

14 Database Systems: Design, Implementation, & Management, 7 th Edition, Rob & Coronel Summary (continued) ColdFusion is a Web application server that provides database access (among other services) to the Web Extensible Markup Language (XML) facilitates the exchange of B2B and other data over the Internet XML provides the semantics that facilitates the exchange, sharing, and manipulation of structured documents across organizational boundaries