Saturday, May 17, 2008

Which catalog fields can EKP extract from the metadata in a SCORM package?

When you import a SCORM or IMS content package, EKP scans the file named imsmanifest.xml that every such package must contain, and extracts certain key information including: the course identifier; the title of the course; and information about the structure of the course including URLs and additional parameters used to launch the individual SCOs and assets.

In addition to this essential information, the package may also contain metadata in the form of a Learning Object Metadata (LOM) XML instance (either embedded in imsmanifest.xml itself, or else in a separate file referenced from imsmanifest.xml). If present, EKP can extract from this metadata any or all of the catalog fields listed below.

  • Description
  • Vendor
  • Duration Comments
  • Objectives
  • Training Hours

Shown below is a minimal LOM XML from which EKP can extract all of the additional catalog fields listed above. The relevant field values are shown in bold text. This example follows IMS LOM as used in SCORM 1.2 packages; however, the same information could be extracted from an IEEE LOM as used in SCORM 2004, and the differences would be minor.

(Note that this is a minimal XML instance from which EKP can extract the values mentioned above. The LOM XML schema denotes as mandatory some elements that are not actually required by EKP, hence this example is not actually valid against the schema, and the SCORM conformance test suite will report it as invalid.)

<lom xmlns="http://www.imsglobal.org/xsd/imsmd_rootv1p2p1">
   <general>
      <description>
         <langstring>Description</langstring>
      </description>
   </general>
   <lifecycle>
      <contribute>
         <centity>
            <vcard>ORG:Vendor</vcard>
         </centity>
      </contribute>
   </lifecycle>
   <educational>
      <typicallearningtime>
         <datetime>02:30:00</datetime>
         <description>
            <langstring>Duration Comments</langstring>
         </description>
      </typicallearningtime>
   </educational>
   <classification>
      <purpose>
        <value>
           <langstring>Educational Objective</langstring>
        </value>
      </purpose>
      <description>
         <langstring>Objective #1</langstring>
      </description>
   </classification>
   <classification>
      <purpose>
        <value>
           <langstring>Educational Objective</langstring>
        </value>
      </purpose>
      <description>
         <langstring>Objective #2</langstring>
      </description>
   </classification>
   <classification>
      <purpose>
        <value>
           <langstring>Educational Objective</langstring>
        </value>
      </purpose>
      <description>
         <langstring>Objective #3</langstring>
      </description>
   </classification>
</lom>

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