Hi, I'm a RoR novice and trying to follow the book to create a table on sqlite3. After I fire up the SQLite console with the 'sqlite3 db/development.sqlite3' command, I see the following:

SQLite version 3.5.9
Enter ".help" for instructions
sqlite>


I then enter the SQL commands that are in the book to create the table. When I press enter I get the following error.

Unable to open database "db/development.sqlite3": unable to open database file

Any suggestions as to what may be wrong? Thanks in advance.