These databases are subscribed to by the University. Most of them contain some mathematics related content as well as computing, computer science and communications technology. Many of them give you full access to some or all of the content in them, but Web of Science is an index and only gives the abstracts of articles.
Other useful databases
For IEEE published standards (American) go to IEEE Xplore. You can search or browse for active and historical standards.
For freely available European standards created by the European Telecommunications Standards Institute (ETSI) visit the ETSI website.
For British and European standards visit the BSI (British Standards Institution) website. These are not free. However, the British Library allows access to the British Standards Online full-text database to be accessed in the reading rooms at their St Pancras site.