Singapore's national data portal, data.gov.sg, is published by Open Government Products. Datasets are published by agencies under their own names - Housing & Development Board, Urban Redevelopment Authority, National Environment Agency, Council For Estate Agencies, Ministry of Health, Ministry of Education and dozens more - and filed under topics: Arts & Culture, Education, Economy, Environment, Geospatial, Housing, Health, Social and Transport.
Three levels organise the catalogue. An agency publishes datasets; related datasets of the same agency form a collection; each dataset is addressed by its id, while its title and coverage can change. Unlike a catalogue of links, the page shows the table itself: a data explorer with paging, a column legend and, on some datasets, a chart such as HDB's comparison of resale prices by flat type.
Cadence is stated per dataset and differs widely. HDB resale transactions are updated daily and CEA Salesperson Information three times a day; NEA's Dates of Hawker Centres Closure lists a year of quarterly cleaning dates and is still revised during the year it covers, while URA publishes amendments to the Master Plan 2019 as separate layers. That spread is why a refresh plan for data.gov.sg is set dataset by dataset.