Karen...

Maybe it would help if you had some specific questions the user community could assist you with.

The Firebird Database Engine is provided in its rawest form by the Firebird Development Group, though it has plenty of documentation.

If you have worked with other database engines, I would strongly recommend that you download the 2.5 Language Reference manual and keep it handy nearby.  It will be a lifesaver for when you run into Firebird's sometimes idiosyncratic behavior.  In addition, you may want to read the following article I wrote about six weeks ago or so that discusses the differences that seasoned database developers will run into when working with Firebird.  The article can be found at the following link... https://blackfalconsoftware.wordpress.com/2018/05/11/the-firebird-database-engine-the-frustrations-of-the-long-distance-database-application-developer/

In terms of what Helen was saying, you should refer to the Linux notes\documentation for all your needs when installing and using Firebird.

For example, in the case you mentioned about ISQL, this is a standard command prompt SQL interface and is used with many database engines, including SQL Server, Oracle, MySQL, and others.  Firebird is simply implementing it to maintain equivalency with what people are used to using when working with database engines from a command prompt.

ISQL is usually found as "isql.exe" in the directory it was installed with during the engine installation process.

To execute it, you would use the same method for executing any MacOS application, which should provide you with an equivalent command prompt window on your MacOS machine.

Steve Naidamast

Sr. Software Engineer