Invitation to Computer Science 6 th Edition Chapter 10 The Tower of Babel.

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Presentation transcript:

Invitation to Computer Science 6 th Edition Chapter 10 The Tower of Babel

Special-Purpose Languages Designed for one specialized task Examples –SQL –HTML –JavaScript 2

SQL SQL: Structured Query Language A database stores data Databases can be queried: The user can pose questions to the database SQL is the language used to frame database queries 3

HTML HTML: HyperText Markup Language HTML is the language used to create HTML documents Web page –An HTML document viewed with Web browser software 4

HTML (continued) An HTML document –Consists of text displayed on the Web page and tags –Tags are special characters –Formatting –Special effects –References to other HTML documents 5

6 Figure 9.4 HTML Code for a Web Page Figure 10.4 HTML Code for a Web Page

Figure 10.5 Body of the Web Page Generated by Figure 9.4 7

Figure 10.6 Some HTML Tags 8

Online Tutorial 9