I want to create a push notification

i want to create a push notification .when any kind of data add into the database that time sent a push notification of the install app.how can i do that please help me anyone.

which server environment do you use?

You can use Firebase.
If you have PHP api search for php api for firebase notification to send notification after making changes in the database.

If your database is not already created and you are not planning for relational database, you can use Firebase Realtime Database.

@arnoldparge i have a own database.

@FnnHuman using wordpress.

is wordpress capable of doing this? i am not sure

Wordpress is just PHP code with a nice plugin system and multiple APIs. It is capable of doing whatever you program it to be capable to.