kamailio/lib/srdb1/schema/matrix.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE table PUBLIC "-//kamailio.org//DTD DBSchema V1.1//EN" 
  "http://kamailio.org/pub/kamailio/dbschema/dtd/1.1/dbschema.dtd" [

<!ENTITY % entities SYSTEM "entities.xml">
%entities;

]>

<table id="matrix" xmlns:db="http://docbook.org/ns/docbook">
    <name>matrix</name>
    <version>1</version>
    <type db="mysql">&MYSQL_TABLE_TYPE;</type>
    <description>
        <db:para>This table is used by the matrix module.
        </db:para>
    </description>

    <column id="first">
        <name>first</name>
        <type>int</type>
        <size>&table_id_len;</size>
        <description>The row id in the matrix</description>
    </column>

    <column id="second">
        <name>second</name>
        <type>short</type>
        <size>&table_id_len;</size>
        <description>The column id in the matrix</description>
    </column>

    <column id="res">
        <name>res</name>
        <type>int</type>
        <size>&table_id_len;</size>
        <description>The resource element in the matrix</description>
    </column>

    <index>
        <name>matrix_idx</name>
        <colref linkend="first"/>
        <colref linkend="second"/>
    </index>
</table>