[Unit]
Description=Synology Database Update
DefaultDependencies=no
IgnoreOnIsolate=yes
After=synosdk-locks.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/bin/sh -c '/bin/mkdir -p /run/data_update/ && cd $_; for i in $(/bin/cat /usr/share/data_update/databases.conf | /bin/jq -r "keys[]"); do /bin/touch using_"$i".lock; done'

[X-Synology]