詮釋資料通常用來描述數位圖書館藏品資源的特性，本文則是取詮釋資料 最廣義的解釋一Data About Data，並將詮釋資料應用在數位圖書館系統間的互 適。本文首先針對數位圖書館互通性下一定義，並介紹數位圖書館互通性的相 關議題和方案。其次則是以Stanford數位圖書館計畫為例，說明詮釋資料在數 位圖書館系統互通性上能夠扮演的角色。文中並闡述交通大學圖書館為解決數 位圖書館互通性問題所提出的詮釋資#建趨誃言，並以芡逋义學离書修及凝獰 合苺錄系浼來驗證詮釋資料建構語言的可行性。

The term ctMetadata,J is often used by information professions to refer to character the resources contained in a digital library. This paper adopts the broadest meaning of “Metadata”--Data about Data? and applies metadata to facilitate the inter-operation among digital library systems. It first defines digital library interoperability its related issues and approaches. Then, citing as an instance the Stanford Digital Library Project to describe the roles thatmetadata can play in handling digital library interoperability. This paper also describes how National Chiao Tung University has tried to solve the problem of handling digital library interoperability by Modeling Language (MML)? which is a language to define the metadata of digital-library contents and services? and define the translation of two kinds of metadata. Finallyj a virtual union catalog system based onMMLf called VUCS at NCTU, is implemented to vindicate the feasibility ofMML.