How can I see if base-file has embedded HSQL or Firebird?

I have only embedded databases in Base. At the beginning they were HSQL because HSQL was the default database for Base. At a certain point in history there was a swap towards Firebird. Some databases I have converted to Firebird and I have taken note of this. But there are some other base-files for which I do not know if they are in HSQL or Firebird. How can I find out if my embedded database is HSQL or Firebird?

Hello,

The database and connection type are located at the bottom of the main Base screen:

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