The difference is that MySQL runs as a server and accesses a directory to store its database, and SQLite is library that reads a single file.

DBD::mysql connects to the server (localhost), chooses a database (nehnu), which is mapped to a disk location (c:/MySQL/Data/database), and logs in with a user (root). The DSN contains all that info: 

DBI->connect("dbi:mysql:nehnu;localhost", "root", "");

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DBD::SQLite opens the database file. The DSN just needs the filename: 

DBI->connect("dbi:SQLite:/SQLite/Data/database.sqlt");

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In reply to Re^3: Table in SQLite by iburrell
in thread Table in SQLite by Anonymous Monk

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