| 摘要 |
The invention is directed to a method, computer program product and computer system for creating an index (201 - 204) of a subset of data, comprising:
- a first step (S100) of receiving:
- a set of data ;
- a first index (101 - 104) of said set of data; and
- identifiers of a subset of data of said set; and
- a second step (S220, S221, S222, S223) of creating a second index (201 - 204) of said subset of data according to the first index (101 - 104) and said identifiers.
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