Superdatabase

1998, IEEE, 1998 Index to IEEE Publications A technological and infrastructural challenge: a superdatabase for accessing all electronically published science and technology articles at once...

Source: wiktionary

Every 30 databases are grouped into a superdatabase.

Source: wiktionary

But in his strongest criticism yet of the superdatabase, Sir Ken Macdonald, the former director of public prosecutions, who has firsthand experience of working with intelligence and law enforcement agencies, told the Guardian such assurances would prove worthless in the long run […] The home secretary postponed the introduction of legislation to set up the superdatabase in October and instead said she would publish a consultation paper in the new year setting out the proposal and the safeguards needed to protect civil liberties.

Source: wiktionary