nextcloud/apps/dav/appinfo/database.xml

<?xml version="1.0" encoding="ISO-8859-1" ?>
<database>

	<!--
CREATE TABLE addressbooks (
    id INT(11) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
    principaluri VARBINARY(255),
    displayname VARCHAR(255),
    uri VARBINARY(200),
    description TEXT,
    synctoken INT(11) UNSIGNED NOT NULL DEFAULT '1',
    UNIQUE(principaluri(100), uri(100))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
	-->
	<table>

		<name>*dbprefix*addressbooks</name>

		<declaration>

		<field>
			<name>id</name>
			<type>integer</type>
			<default>0</default>
			<notnull>true</notnull>
			<autoincrement>1</autoincrement>
			<unsigned>true</unsigned>
			<length>11</length>
		</field>

			<field>
				<name>principaluri</name>
				<type>text</type>
			</field>
			<field>
				<name>displayname</name>
				<type>text</type>
			</field>
			<field>
				<name>uri</name>
				<type>text</type>
			</field>
			<field>
				<name>description</name>
				<type>text</type>
			</field>
			<field>
				<name>synctoken</name>
				<type>integer</type>
				<default>1</default>
				<notnull>true</notnull>
				<unsigned>true</unsigned>
			</field>
			<index>
				<name>addressbook_index</name>
				<unique>true</unique>
				<field>
					<name>principaluri</name>
				</field>
				<field>
					<name>uri</name>
				</field>
			</index>
		</declaration>
	</table>

	<!--

CREATE TABLE cards (
    id INT(11) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
    addressbookid INT(11) UNSIGNED NOT NULL,
    carddata MEDIUMBLOB,
    uri VARBINARY(200),
    lastmodified INT(11) UNSIGNED,
    etag VARBINARY(32),
    size INT(11) UNSIGNED NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

	-->
	<table>
		<name>*dbprefix*cards</name>
		<declaration>
			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<unsigned>true</unsigned>
				<length>11</length>
			</field>
			<field>
				<name>addressbookid</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
			</field>
			<field>
				<name>carddata</name>
				<type>blob</type>
			</field>
			<field>
				<name>uri</name>
				<type>text</type>
			</field>
			<field>
				<name>lastmodified</name>
				<type>integer</type>
				<unsigned>true</unsigned>
				<length>11</length>
			</field>
			<field>
				<name>etag</name>
				<type>text</type>
				<length>32</length>
			</field>
			<field>
				<name>size</name>
				<type>integer</type>
				<notnull>true</notnull>
				<unsigned>true</unsigned>
				<length>11</length>
			</field>
		</declaration>
	</table>

	<!--
CREATE TABLE addressbookchanges (
    id INT(11) UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
    uri VARBINARY(200) NOT NULL,
    synctoken INT(11) UNSIGNED NOT NULL,
    addressbookid INT(11) UNSIGNED NOT NULL,
    operation TINYINT(1) NOT NULL,
    INDEX addressbookid_synctoken (addressbookid, synctoken)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
	-->

	<table>
		<name>*dbprefix*addressbookchanges</name>
		<declaration>
			<field>
				<name>id</name>
				<type>integer</type>
				<default>0</default>
				<notnull>true</notnull>
				<autoincrement>1</autoincrement>
				<unsigned>true</unsigned>
				<length>11</length>
			</field>
			<field>
				<name>uri</name>
				<type>text</type>
			</field>
			<field>
				<name>synctoken</name>
				<type>integer</type>
				<default>1</default>
				<notnull>true</notnull>
				<unsigned>true</unsigned>
			</field>
			<field>
				<name>addressbookid</name>
				<type>integer</type>
				<notnull>true</notnull>
			</field>
			<field>
				<name>operation</name>
				<type>integer</type>
				<notnull>true</notnull>
				<length>1</length>
			</field>

			<index>
				<name>addressbookid_synctoken</name>
				<field>
					<name>addressbookid</name>
				</field>
				<field>
					<name>synctoken</name>
				</field>
			</index>

		</declaration>
	</table>

</database>