While there is typically only one conceptual (or logical) and physical (or internal) view of the data, there can be any number of different external views. This allows users to see database information in a more business-related way rather than from a technical, processing viewpoint. For example, a financial department of a company needs the payment details of all employees as part of the company's expenses, but does not need details about employees that are the interest of the human resources department. Thus different departments need different views of the company's database.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many duplicated external views of data are there?
Ah, so.. unanswerable

Following Garreth Mallory's promotion to M, on a mission in Mexico City unofficially ordered by a posthumous message from the previous M, 007 James Bond kills three men plotting a terrorist bombing during the Day of the Dead and gives chase to Marco Sciarra, an assassin who survived the attack. In the ensuing struggle, Bond steals his ring, which is emblazoned with a stylised octopus, and then kills Sciarra by kicking him out of a helicopter. Upon returning to London, Bond is indefinitely suspended from field duty by M, who is in the midst of a power struggle with C, the head of the privately-backed Joint Intelligence Service, consisting of the recently merged MI5 and MI6. C campaigns for Britain to form alongside 8 other countries "Nine Eyes ", a global surveillance and intelligence co-operation initiative between nine member states, and uses his influence to close down the '00' section, believing it to be outdated.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Which holiday was the terrorist bombing planned for?
Ah, so.. Day of the Dead

As of 2015, the government structure of the New Delhi Municipal Council includes a chairperson, three members of New Delhi's Legislative Assembly, two members nominated by the Chief Minister of the NCT of Delhi and five members nominated by the central government.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): The Chief Minister of what NCT is responsible for nominating two members to the New Delhi Municipal Council?
Ah, so..
NCT of Delhi