Simple example

For documenting a dataset the content could look something like this.

ID	subj	q1
0	Anders	3
1	Lars	2
2	Krister	3

A DDI Example

<DDI>
 <DataFile>
   <path>ct-2015.survey.csv</path>
   <haveLogicalDataset>dataset1</haveLogicalDataset>
 </DataFile>
 <LogicalDataset id="dataset1">
   <hasVariable>ID</hasVariable>
   <hasVariable>subj</hasVariable>
   <hasVariable>q1</hasVariable>
 </LogicalDataset>
 <Variable id="ID">
   <Label>The record id of the collection</Label>
   <Type>Numreric</Type>
 </Variable>
 <Variable id="subj">
   <Label>Person interviewd</Label>
   <Type>String</Type>
 </Variable>
 <Variable id="q1">
   <Label>Relation to cats</Label>
   <hasCodeList>c_list_1</hasCodeList>
 </Variable>
 <CodeList id="c_list_1">
   <hasCode>c2</hasCode>
   <hasCode>c3</hasCode>
 </CodeList>
 <Code id="c2">
   <value>2</value>
   <Label>Yes</Label>
 </Code>
 <Code id="c3">
   <value>3</value>
   <label>No</label>
 </Code>
</DDI>