Each individual document is an 18-tuple JOB_DESCRIPTION (see below). Any of the 18 items may apear 0, 1, or several times in a particular document.
JOB_DESCRIPTION ::=
id,
title,
salary,
company,
recruiter,
state,
city,
country,
language,
platform,
application,
area,
req_years_experience,
desired_years_experience,
req_degree,
desired_degree,
post_date