Company

idnamelocation
1TechCorpNew York
2SoftwareIncSan Francisco

ITJobPosting

idjobTitlecompanyId
(→ Company.id)
1IT Support Technician1
2Network Administrator2

ITSkillsRequired

idskillName
1Programming
2Database Management

JobRequirement

iditJobPostingIdrequiredSkillId
(→ ITJobPosting.id)(→ ITSkillsRequired.id)
111
212

OperatingSystems

idosName
1Windows
2Linux

ITJobOSRequirements

iditJobPostingIdoperatingSystemId
(→ ITJobPosting.id)(→ OperatingSystems.id)
111
212
321