What is the extension for a PostgreSQL Database? and Creating Databases

[Das Goravani]

1.   What is the extension for a PostgreSQL Database?


2.   In one example supplied with the SDK the programmer specifically check for the existence of a table within the newly created database created using  $opencreate  and a $logon  while in another example they don’t check at all for the table, and dont use  $opencreate, in fact they don’t create the database nor check into it, it’s as if   a.  The logon statement creates it if it doesn’t exist and b. that the first record insertion creates a table and defines it if it doesn’t exist.  Comments?