可擴展標示語言

本文將依發展的時間順序介紹三種值得電子圖書館領域注意的電子文件格式：標準通用標示語言（Standard Generalized Markup Language；簡稱SGML）、超文件標示語言（Hypertext Markup Language；簡稱HTML）與最新崛起的可擴展標示語言（Extensible Markup Language，簡稱XML），並作簡單的比較。

This article is to introduce three formats of electronic document in order of development which are worth watching closely by digital library community. They are SGML(Standard Generalized Markup Language), HTML(Hypertext Markup Language) and XML(Extensible Markup Language), which is the new markup wave. Then have a simple comparison of them.

本研究提出一個適用於CMARC4完整版之XML DTD，並透過系統實作方式，架構一個基於XML之編目、WebOPAC及WAPOPAC模組。本文主要研究成果如下：首先，我們探討CMARC4完整版之DTD在設計時比簡篇更複雜的議題，並提出一個實驗用途但內容完整的版本，可做為相關單位制訂標準時之參考依據；其次，本文透過XML與XSL的相互搭配，可使WebOPAC的檢索結果呈現不同版面格式，而又不影響原始資料結構；再者，我們結合WAP技術，發展一個名為WAPOPAC(WAP-based OPAC)的行動線上公用目錄系統，可透過WAP終端設備來連線，以滿足行動圖書館的通訊需求！

This paper proposes an appropriate DTD for CMARC4, and implements three modules based on XML technology: a cataloguing module, a WebOPAC module and a WAPOPAC module. The research results are as follows: First, we examine some complicated issues of CMARC DTD design. An experimental but complete version involved in CMARC DTD is proposed for reference. Secondary, we combine XML with XSL for WebOPAC to show the query results in a different layout format without affecting the original data structure. Furthermore, we apply the WAP technology to develop an online public catalogue system for mobile access. Which is named WAPOPAC(WAP-based OPAC). The users could use WAP devices to access such a WAP-based mobile library.