Master IPDR Schema Document [Version 2.5]
From: http://www.ipdr.org/documents/NDM-U_2-5.pdf
Network Data Management - Usage (NDM-U) For IP-Based Services
Version 2.5. April 12, 2001. 62 pages.

The Master IPDR Schema Document formally describes how all IPDR
documents are constructed.  Additional details describing element use
are included and considered part of the overall IPDR Document
specification. Comments do not form part of the specification.

--------------------------------------------------------------------

<?xml version = "1.0" encoding = "UTF-8"?>
<schema xmlns = "http://www.w3.org/2000/10/XMLSchema"
targetNamespace = "http://www.ipdr.org/namespaces/ipdr"
xmlns:ipdr = "http://www.ipdr.org/namespaces/ipdr"
version = "2.5">
<element name = "IPDRDoc">
<annotation>
<documentation>
The IPDRDoc element is the top -level container
of a set of IPDRs. The document will also define the entity
which recorded these IPDRs via the IPDRRec element.
</documentation>
</annotation>
<complexType>
<sequence>
<element ref  =/>
<element ref  = minOccurs  =/>
<element ref  = maxOccurs  =/>
<element ref  = minOccurs  =/>
</sequence>
<attribute name = "docId" use = "required" type = "string"/>
<attribute name = "seqNum" type = "integer"/>
<attribute name = "version" type = "string"/>
<attribute name = "startTime" type = "timeInstant"/>
<attribute name = "info" type = "string"/>
</complexType>
</element>
<element name = "IPDRDoc.End">
<annotation>
<documentation>
The IPDRDoc.End element optionally marks the
end of the IPDR block. It may contain some check
information like a count of IPDRs.
</documentation>
</annotation>
<complexType>
<attribute name = "count" type = "integer"/>
<attribute name = "endTime" type = "timeInstant"/>
</complexType>
</element>
<element name = "IPDRRec">
<annotation>
<documentation>
The IPDRRec element describes the entity that
is responsible for creating (recording) the IPDRDoc.
</documentation>
</annotation>
<complexType>
<attribute name = "id" type = "ID"/>
<attribute name = "startTime" type = "timeInstant"/>
<attribute name = "info" type = "string"/>
</complexType>
</element>
<element name = "IPDRRecRef">
<annotation>
<documentation> The IPDRRecRef element may be used to associate
common references to the same IPDRRec element without
repeating its other usage attributes.
</documentation>
</annotation>
<complexType>
<attribute name = "ref" use = "required" type = "IDREF"/>
</complexType>
</element>
<element name = "IPDRRecList">
<annotation>
<documentation>
The IPDRRecList identifies contributing IPDR
recording entities which were used in the construction
of the current IPDR Document. A typical example use
would be for an aggregator of IPDR documents to
identify the set of initial recorders presenting
IPDRs.
</documentation>
</annotation>
<complexType>
<sequence>
<element ref = "ipdr:IPDRRec" maxOccurs = "unbounded"/>
</sequence>
</complexType>
</element>
<element name = "IPDR">
<annotation>
<documentation>
An IPDR describes an event between a Service
Consumer (SC) and a Service Element (SE). The SC and SE
elements are contained beneath an entity called the
Service Session (SS). Details of the event is contained
in the Usage Entry (UE) element. All IPDRs have a time
indicating when the event occurred.
</documentation>
</annotation>
<complexType>
<sequence>
<choice minOccurs = "0">
<element ref = "ipdr:IPDRRec"/>
<element ref = "ipdr:IPDRRecRef"/>
</choice>
<choice>
<element ref = "ipdr:SS"/>
<element ref = "ipdr:SSRef"/>
</choice>
<element ref = "ipdr:UE"/>
<element ref = "ipdr:BaseIPDR" minOccurs = "0"/>
</sequence>
<attribute name = "id" type = "ID"/>
<attribute name = "time" use = "required" type = "timeInstant"/>
<attribute name = "seqNum" type = "integer"/>
</complexType>
</element>
<element name = "SS">
<annotation>
<documentation>
The Service Session (SS) element groups the
Service Consumer and Service Element information. This
grouping allows an SC/SE pair to be associated with other
IPDRs via a single reference (the SSRef).
</documentation>
</annotation>
<complexType>
<sequence>
<choice>
<element ref = "ipdr:SC"/>
<element ref = "ipdr:SCRef"/>
</choice>
<choice>
<element ref = "ipdr:SE"/>
<element ref = "ipdr:SERef"/>
</choice>
</sequence>
<attribute name = "id" type = "ID"/>
<attribute name = "service" type = "string"/>
</complexType>
</element>
<complexType name = "SCType"
final = "restriction">
<annotation>
<documentation>
This is the base type for the Service Consumer
element. The service specific schema can extend
this by deriving from it.
</documentation>
</annotation>
<attribute name = "id" type = "ID"/>
</complexType>
<element name = "SC" type = "ipdr:SCType">
<annotation>
<documentation>
This element describes the Service Consumer.
</documentation>
</annotation>
</element>
<complexType name = "SEType"
final = "restriction">
<annotation>
<documentation>
This is the base type for the SE (Service
Element)element. The service specific schema can extend
this by deriving from it.
</documentation>
</annotation>
<attribute name = "id" type = "ID"/>
</complexType>
<element name = "SE" type = "ipdr:SEType">
<annotation>
<documentation>
This element describes the Service Element.
</documentation>
</annotation>
</element>
<complexType name = "UEType"
final = "restriction">
<annotation>
<documentation>
This is the base type for the UE (Usage Entry)
element. The service specific schema can extend
this by deriving from it.
</documentation>
</annotation>
<attribute name = "type" use = "default" value = "Start-Stop" type =
"string"/>
</complexType>
<element name = "UE" type = "ipdr:UEType">
<annotation>
<documentation>
This element describes the Usage Entry.
</documentation>
</annotation>
</element>
<element name = "SSRef">
<annotation>
<documentation>
The SSRef element may be used to associate common
references to the same pairing of a Service Consumer
and a Service Element.
</documentation>
</annotation>
<complexType>
<attribute name = "ref" use = "required" type = "IDREF"/>
</complexType>
</element>
<element name = "SERef">
<annotation>
<documentation>
The SERef element may be used to associate
common references to the Service Element.
</documentation>
</annotation>
<complexType>
<attribute name = "ref" use = "required" type = "IDREF"/>
</complexType>
</element>
<element name = "SCRef">
<annotation>
<documentation>
The SCRef element may be used to associate
common references to the Service Consumer.
</documentation>
</annotation>
<complexType>
<attribute name = "ref" use = "required" type = "IDREF"/>
</complexType>
</element>
<element name = "BaseIPDR">
<annotation>
<documentation>
The BaseIPDR element allows reference to be
made to IPDRs which contributed to the construction of the
current IPDR element.
</documentation>
</annotation>
<complexType>
<attribute name = "refs" use = "required" type = "IDREFS"/>
</complexType>
</element>
</schema>