tailieunhanh - Lecture Business system development - Lecture 20: Designing distributed and internet systems

After you have mastered the material in this chapter, you will be able to: Described standards for Internet-based system design, described options for ensuring internet design consistency, described site management issues, described issues related to managing online data. | Business System Development CSC581 Lecture 20 Designing Distributed and Internet Systems 2 Summary of the previous lecture In previous lecture, we : Defined key client/server, LAN, distributed database, and middleware terms. Distinguished between file server and client/server environments. Described alternative distributed system designs. Outlines We today’s lecture we will: Describe standards for Internet-based system design. Describe options for ensuring Internet design consistency. Describe site management issues. Describe issues related to managing online data. The Process of Designing Distributed and Internet Systems Similar to designing single-location systems Due to multi-location deployment, numerous design issues must be considered More opportunity for failure due to number of components Main issues involve ensuring reliability, availability, survivability, performance 6 Designing Internet Systems Most new system development focuses on Internet-base applications (for . | Business System Development CSC581 Lecture 20 Designing Distributed and Internet Systems 2 Summary of the previous lecture In previous lecture, we : Defined key client/server, LAN, distributed database, and middleware terms. Distinguished between file server and client/server environments. Described alternative distributed system designs. Outlines We today’s lecture we will: Describe standards for Internet-based system design. Describe options for ensuring Internet design consistency. Describe site management issues. Describe issues related to managing online data. The Process of Designing Distributed and Internet Systems Similar to designing single-location systems Due to multi-location deployment, numerous design issues must be considered More opportunity for failure due to number of components Main issues involve ensuring reliability, availability, survivability, performance 6 Designing Internet Systems Most new system development focuses on Internet-base applications (for internal processing, business-to-business, and business-to-consumer) Main design issues: Standards Separating content from display Future evolution Site consistency Site management Online data management Standards for Internet Design Internet design is simpler than client/server due to proliferation of standards Types of Standards: Domain naming (BIND): a method for translating domain names into Internet Protocol (IP) addresses Hypertext Transfer Protocol (HTTP): a communication protocol for exchanging information on the Internet Hypertext Markup Language (HTML): the standard language for representing content on the Web via command tags 8 Separating Content from Display HTML has limitations due to format orientation of tags eXtensible Markup Language (XML) has been developed to separate content from display XML: an Internet authoring language that allows designers to create customized tags that represent data transmitted between applications Future Evolution Move from desktop PCs to thin .