The US software giant, ORACLE CORP., will participate, through partner companies, in the international tender for the building of the National Health Insurance Fund /NHIF/ information system, Reuters said, citing sources from the Bulgarian office of the company. The competition will be public and will be announced in November the earliest. The project for the third and fourth stage of the system amounts to USD 8m. Microsoft Corp. has filed application for participation in the tender through Rila Solutions