Land Registries & Cadastres

In your country, the Land Registry and the Cadaster are they different institutions?

Yes

a) Which are the main duties of the respective organizations?

The cadastre does the mapping and valuation of properties
The land registration provides legal security

b) Which Ministry’s competence do they fall under?

Finances

c) Could you describe in brief the form of collaboration between the two institutions?

The desciprion of properties involved in a transaction are provided by the cadastre and have to be used in deeds.
The legal part of the transaction itself is booked by the agents of the land registry for as well the cadastre as the land registry.