The Internet has fundamentally changed the way we conduct our business. Even 10 years ago or so, it was not possible to order a book or access a sequence database in another continent using the computer in our office. All these become possible due to the progress in information technology. It is especially important for biologists to realise that information technology has brought us enormous opportunities in sharing our data. In this paper, authors review and introduce the technologies relating to biological data, database, dynamic integration of databases with the World Wide Web (Web hereafter), and data standardisation.