1<?xml version="1.0" encoding="UTF-8"?>
 2<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 3  <xs:import namespace="http://www.w3.org/2001/XMLSchema-instance" schemaLocation="xsi.xsd"/>
 4  <xs:element name="srdb-version">
 5    <xs:complexType>
 6      <xs:all>
 7        <xs:element ref="version"/>
 8        <xs:element minOccurs="0" ref="import-date"/>
 9      </xs:all>
10      <xs:attribute ref="xsi:noNamespaceSchemaLocation"/>
11    </xs:complexType>
12  </xs:element>
13  <xs:element name="version" type="xs:string">
14    <xs:annotation>
15      <xs:documentation>Version identifier for the SRDB</xs:documentation>
16    </xs:annotation>
17  </xs:element>
18  <xs:element name="import-date" type="xs:dateTime">
19    <xs:annotation>
20      <xs:documentation>Date the SRDB was implemented in the project</xs:documentation>
21    </xs:annotation>
22  </xs:element>
23</xs:schema>