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Subject: Best practices for external entity references?
Hi, I am assembling the portions of a modular docBook document, and was wondering if here are any resources for best practices for using entity references. Each section file (meaning the root element is a <section> element) will reference one or more outcomes, course lists, and / or general entities, and I would like to manage these entities as centrally as possible. I have Elliotte Harold's XML Bible and have googled this topic, and have come up with two possibilities: 1) Use an 'index' file to point to other files that contain the actual entity references: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [ <!ENTITY % ENT_INDEX SYSTEM "../entities/entity_index.dtd"> %ENT_INDEX; ]> 2) Refer to each external parameter entity as required: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [ <!ENTITY % GENERAL SYSTEM "../entities/general.dtd"> %GENERAL; <!ENTITY % OUTCOMES SYSTEM "../entities/outcomes.dtd"> %OUTCOMES; <!ENTITY % COURSELISTS SYSTEM "../entities/courselists.dtd"> %COURSELISTS; ]> Any thoughts on 1) vs. 2), or on this method in general? I'm leaning towards 1), as I can then add other entity sets if needed to entity_index.dtd. Also, are there any gotchas regarding addressing (relative / absolute / fully resolved)? Should I be looking at using Catalogs? I have attached copies of the entity files, and I look forward to your feedback. TIA, Chris Chris Johnson Web Developer Capilano College North Vancouver, Canada 604.986.1911 ext. 3455 cjohnson@capcollege.bc.ca%GENERAL; %OUTCOMES; %COURSELISTS;
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