solr/core/src/resources/SystemCollectionSchema.xml

<?xml version="1.0" ?>
<schema name="_system collection or core" version="1.1">
  <fieldtype name="string"  class="solr.StrField" sortMissingLast="true" omitNorms="true"/>
  <fieldType name="long" class="solr.LongPointField" docValues="true" positionIncrementGap="0"/>
  <fieldType name="double" class="solr.DoublePointField" docValues="true" positionIncrementGap="0"/>
  <fieldType name="bytes" class="solr.BinaryField"/>
  <fieldType name="date" class="solr.DatePointField" docValues="true"/>
  <fieldType name="text_ws" class="solr.TextField" positionIncrementGap="100">
    <analyzer>
      <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    </analyzer>
  </fieldType>
  <uniqueKey>id</uniqueKey>
  <field name="id"   type="string"   indexed="true"  stored="true"  multiValued="false" required="true"/>
  <field name="_version_" type="long"     indexed="true"  stored="true"/>
  <field name="type"   type="string"   indexed="true"  stored="true"  multiValued="false" required="true"/>
  <!-- blob repository fields -->
  <field name="md5"   type="string"   indexed="true"  stored="true"  multiValued="false"/>
  <field name="blob"      type="bytes"   indexed="false" stored="true"  multiValued="false" />
  <field name="size"      type="long"   indexed="true" stored="true"  multiValued="false" />
  <field name="version"   type="long"     indexed="true"  stored="true"  multiValued="false" />
  <field name="timestamp"   type="date"   indexed="true"  stored="true"  multiValued="false" />
  <field name="blobName"      type="string"   indexed="true"  stored="true"  multiValued="false" />

  <!-- general purpose fields -->
  <dynamicField name="*_s"  type="string"  indexed="true"  stored="true" />
  <dynamicField name="*_ss"  type="string"  indexed="true"  multiValued="true"  stored="true" />
  <dynamicField name="*_str"  type="string"  indexed="false" stored="true" />
  <dynamicField name="*_strs"  type="string"  indexed="false"  multiValued="true" stored="true" />
  <dynamicField name="*_bin"  type="bytes"  indexed="false"  multiValued="false" stored="true" />
  <dynamicField name="*_t"  type="text_ws"  indexed="true"  stored="true" />
  <dynamicField name="*_ts"  type="text_ws"  indexed="true"  multiValued="true" stored="true" />
  <dynamicField name="*_dt" type="date" indexed="true" stored="true"/>
  <dynamicField name="*_l" type="long" indexed="true" stored="true"/>
  <dynamicField name="*_ls" type="long" multiValued="true" indexed="true" stored="true"/>
  <dynamicField name="*_d" type="double" indexed="true" stored="true"/>
  <dynamicField name="*_ds" type="double" multiValued="true" indexed="true" stored="true"/>
</schema>