Discussion
Assertion (A) : Web scale discovery service provides a 'single interface' to search all resources of the library.
Reason (R) : It brings results from all databases all over the world.
Codes :
Answer: C
(A) is true but (R) is false.
A web-scale discovery service gives a single search interface over the library's catalogue, its subscribed databases, e-journals and repositories, using a central index, so the assertion is true.
It does not bring results from all databases in the world. It searches the content the service provider has indexed and the library has access to; resources outside the index, or those the library does not subscribe to, are not covered. So the reason is false.
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