Startup Idea: Centralized Login Credentials Management Tool

Startup idea to build a secured database where users can track, manage and receive reminders about their various login credentials expiry across different professional applications.

At work, I am required to maintain login credentials for multiple secure applications. A database that could keep track of all of my login credentials would be useful. It might be nice if there was a way to input how often the credentials need to be updated, so that the database could send me an alert that one of my login credentials is about to expire. While many of the applications independently sent these kinds of alerts, an alert from the database would prompt me to keep my database up to date in real time.