Can we run this with ceon job?

[raymondchandler]

Friends, let's consider table a and table b. Both of them have columns 1, 2, 3, and 4. Table a will search for the data in column 1 in table b's column 3. If it finds a match and there is a 0 in table b's column 4, then table a will set column 2 to true. I want to run this using a cron job every 15 minutes. How can we achieve this?