SQLite

sqlite3 - a very handy little database as it is file based and included with almost everything.

• simple-database-access-using-perl-dbi-and-sql - perlmaven.com
• dbi good practise - easysoft.com
• connect_to_a_sqlite_database_using_perl - microhowto.info
• http://www.tutorialspoint.com/sqlite/sqlite_perl.htm

Convert Unix epoch time to local date and time format

Also date('now') as an equivalent for Oracle's sysdate

select host, sid, datetime(started,'unixepoch','localtime'), type from dbahawk_rman_summary where started > date('now')-4 order by 1,2;