ATSC NRT - File Delivery schema definitions Version: 2.0 Date: TBD Location: TBD Namespace: http://www.atsc.org/XMLSchemas/nrt-fd-2 Information about the use of this schema can be found in ATSC standard A/103 Non-Real-Time Content Delivery available at http://www.atsc.org/ and referenced as [NRT] below. This schema defines XML elements used as extensions to the schema defined for the FLUTE FDT in IETF RFC 6726. These extensions add ATSC NRT-specific metadata to express grouping of files into content items within the FLUTE sessions used for content delivery in ATSC NRT services (fixed or mobile). FDT Instances are expected to consist of XML elements from the IETF FLUTE File Description Table namespace (urn:ietf:params:xml:ns:fdt), as defined in the schema located (at the time of publication) at http://www.iana.org/assignments/xml-registry/schema/fdt.xsd with ATSC NRT extension elements inserted in a manner consistent with the wildcards in that schema. This schema also defines a MultiFileRequest element that is used to retrieve initial versions and subsequent updates of files that are being frequently updated. Zero or more of these elements may appear as instantiations of the element wildcard in the FDT-InstanceType content model. When they do appear there, they shall specify the default content linkage tag(s) for all files in the FDT Instance. See Section 5.3 of [NRT]. Zero or more of these elements may appear as instantiations of the element wildcard in the FileType content model. When they do appear there, they shall specify the content linkage tag(s) for that specific file. See Section 5.3 of [NRT]. ID used to group files in a content item. See Sections 4.3 and 5.3 of [NRT].