Sqlite 2 databases can not be correctly read by sqlite3

If you try to open a sqlite file that is created with sqlite 2 with sqlite3 command then you can get an error like this when running commands on that database

Error: file is encrypted or is not a database

The database file must be created and read by the same version of sqlite. Sqlite3 will not be able to see the tables created in the sqlite2 database.
This can also cause a problem if you are using the sqlite 3 jdbc connector with a sqlite database file that was created with sqlite2. Queries on this file will say that the table you are trying to access does not exist.