How to develop a plugin which get/put story points in database

[Sunilkumar k]

I need to develop a plugin which gets / puts story points in database.

I need a plugin to store the story points of a story in the database can you please help me in guiding the steps that i should follow

[Nic Brough -Adaptavist-]

You don't get direct access to the database on Cloud, so there is no direct answer to this question.  You could do it on Server, but you would be making a nightmare for yourself, no-one should be looking at using a Jira database for anything other than running Jira.

But it's worth a look at the source of the question.  What are you actually trying to do?

Are you trying to get/set the Story Points field on a set of issues?  Or are you trying to create your own storage for something you're going to call Story points?