function bp_core_install_extended_profiles() {
	global $wpdb;

	$sql             = array();
	$charset_collate = $GLOBALS['wpdb']->get_charset_collate();
	$bp_prefix       = bp_core_get_table_prefix();

	// These values should only be updated if they are not already present.
	if ( ! bp_get_option( 'bp-xprofile-base-group-name' ) ) {
		bp_update_option( 'bp-xprofile-base-group-name', _x( 'General', 'First field-group name', 'buddypress' ) );
	}

	if ( ! bp_get_option( 'bp-xprofile-fullname-field-name' ) ) {
		bp_update_option( 'bp-xprofile-fullname-field-name', _x( 'Display Name', 'Display name field', 'buddypress' ) );
	}

	$sql[] = "CREATE TABLE {$bp_prefix}bp_xprofile_groups (
				id bigint(20) unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY,
				name varchar(150) NOT NULL,
				description mediumtext NOT NULL,
				group_order bigint(20) NOT NULL DEFAULT '0',
				can_delete tinyint(1) NOT NULL,
				KEY can_delete (can_delete)
			) {$charset_collate};";

	$sql[] = "CREATE TABLE {$bp_prefix}bp_xprofile_fields (
				id bigint(20) unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY,
				group_id bigint(20) unsigned NOT NULL,
				parent_id bigint(20) unsigned NOT NULL,
				type varchar(150) NOT NULL,
				name varchar(150) NOT NULL,
				description longtext NOT NULL,
				is_required tinyint(1) NOT NULL DEFAULT '0',
				is_default_option tinyint(1) NOT NULL DEFAULT '0',
				field_order bigint(20) NOT NULL DEFAULT '0',
				option_order bigint(20) NOT NULL DEFAULT '0',
				order_by varchar(15) NOT NULL DEFAULT '',
				can_delete tinyint(1) NOT NULL DEFAULT '1',
				KEY group_id (group_id),
				KEY parent_id (parent_id),
				KEY field_order (field_order),
				KEY can_delete (can_delete),
				KEY is_required (is_required)
			) {$charset_collate};";

	$sql[] = "CREATE TABLE {$bp_prefix}bp_xprofile_data (
				id bigint(20) unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY,
				field_id bigint(20) unsigned NOT NULL,
				user_id bigint(20) unsigned NOT NULL,
				value longtext NOT NULL,
				last_updated datetime NOT NULL,
				KEY field_id (field_id),
				KEY user_id (user_id)
			) {$charset_collate};";

	$sql[] = "CREATE TABLE {$bp_prefix}bp_xprofile_meta (
				id bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
				object_id bigint(20) NOT NULL,
				object_type varchar(150) NOT NULL,
				meta_key varchar(255) DEFAULT NULL,
				meta_value longtext DEFAULT NULL,
				KEY object_id (object_id),
				KEY meta_key (meta_key(191))
			) {$charset_collate};";

	dbDelta( $sql );

	// Insert the default group and fields.
	$insert_sql = array();

	if ( ! $wpdb->get_var( "SELECT id FROM {$bp_prefix}bp_xprofile_groups WHERE id = 1" ) ) {
		$insert_sql[] = "INSERT INTO {$bp_prefix}bp_xprofile_groups ( name, description, can_delete ) VALUES ( " . $wpdb->prepare( '%s', stripslashes( bp_get_option( 'bp-xprofile-base-group-name' ) ) ) . ", '', 0 );";
	}

	if ( ! $wpdb->get_var( "SELECT id FROM {$bp_prefix}bp_xprofile_fields WHERE id = 1" ) ) {
		$insert_sql[] = "INSERT INTO {$bp_prefix}bp_xprofile_fields ( group_id, parent_id, type, name, description, is_required, can_delete ) VALUES ( 1, 0, 'textbox', " . $wpdb->prepare( '%s', stripslashes( bp_get_option( 'bp-xprofile-fullname-field-name' ) ) ) . ", '', 1, 0 );";

		// Make sure the custom visibility is disabled for the default field.
		if ( ! $wpdb->get_var( "SELECT id FROM {$bp_prefix}bp_xprofile_meta WHERE id = 1" ) ) {
			$insert_sql[] = "INSERT INTO {$bp_prefix}bp_xprofile_meta ( object_id, object_type, meta_key, meta_value ) VALUES ( 1, 'field', 'allow_custom_visibility', 'disabled' );";
		}
	}

	dbDelta( $insert_sql );
}