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DLF/Aquifer Implementation Guidelines
Summary of Requirements and Recommendations

 

This table is from the Digital Library Federation / Aquifer Implementation Guidelines for Shareable MODS Records, Version 1.0, November 2006. It summarizes the recommendations from those guidelines for the different MODS elements.

 
Element Element Requirement Level Subelement(s)/Attributes required if element used Subelement(s)/Attributes recommended or recommended if applicable Repeatable Content Controlled
<titleInfo> Required – <title> – type attribute

– authority attribute

– <subTitle>

– <partName>

– <partNumber>

– <nonSort>
Yes Recommended authority attribute limits content
<name> Recommended if applicable – <namePart> – type attribute

– authority attribute

– <role><roleTerm>
Yes Recommended authority attribute limits content
<typeOfResource> Required None – collection attribute

– manuscript attribute
Yes Yes
<genre> Recommended – authority attribute N/A Yes Recommended authority attribute limits content
<originInfo> Required – <placeTerm> and type attribute when <place> used

– authority attribute when <placeTerm type="code"> used

– At least one date subelement

– At least one date subelement must have attribute keyDate="yes"
– <publisher>

– encoding attribute for date

– point attribute for date

– qualifier attribute for date

– <edition>
Yes Recommended authority and encoding attribute limits content
<language> Required, if language is primary to resource – <languageTerm>

– each type attribute

– authority attribute when type="code"
N/A Yes Required authority attribute limits content
<physical Description> Required – <digitalOrigin>

– <internetMediaType>
– <form> and authority attribute

– <extent>

– <note>
No Yes (see guidelines)
<abstract> Recommended N/A N/A Yes No
<tableOfContents> Recommended if applicable None – xlink attribute Yes No
<targetAudience> Recommended if applicable None – authority attribute Yes Recommended authority attribute limits content
<note> Recommended if applicable None None Yes No
<subject> Required if applicable At least one subelement is required as <subject> is a wrapper element. – authority attribute

– <topic>

– <geographic>

– <temporal> with encoding, point attributes

– <titleInfo>

– <name>

– <hierarchicalGeographic>

– <geographicCode> with authority attribute
Yes Recommended authority attribute limits content
<classification> Optional – authority attribute – edition attribute Yes Required authority attribute limits content
<relatedItem> Recommended if applicable – type attribute – xlink attribute Yes In some cases (see guidelines)
<identifier> Recommended – type attribute – invalid attribute Yes Required type attribute limits content
<location> Required – <url>

– one and only one instance of <location> <url> contains usage="primary display"
– authority attribute with <physicalLocation> subelement

– access attribute with <url> subelement
Yes Recommended authority attribute limits content
<accessCondition> Required – At least one attribute type="use and reproduction" None Yes No
<part> Recommended if applicable (see guidelines) None – <detail> with type attribute

– <extent> with unit attribute

– <start>, <end>, <total>, <list> subelements

– <date> with encoding and point attributes

– <text>
Yes No
<extension> Optional N/A N/A N/A N/A
<recordInfo> Required – <languageOfCataloging>

– <languageTerm>

– authority attribute
– <recordContentSource> with authority attribute

– <recordOrigin>
No Required authority attribute limits content in some subelements