SQLite3ProfessionalPlugin is very different from the built-in REALbasic database engine, it doesn't have built-in Database and RecordSet classes (even if it's easy to create a wrapper for these classes). It is a near 1 to 1 map to the sqlite3 C api, so you can have access to every sqlite3 routine, so for example, you can interact directly with the virtual machine or you can create your own sql functions, and much more. These are very powerful concepts that cannot be added to the current REALSQLDatabase plugin.
The audience for this plugin are professional database users, that, for example, can take advantage of the sqlite3 progress handler routine to give time to other threads or to update the REALbasic GUI while a complex sql operation is in place, or that can use the sqlite3 virtual machine to build a query system with zero delay time and near zero memory requirements even if millions of rows are returned from a query.
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