What is an Index Schema?
Index schemas define the structure of the Exalead CloudView index, which constitutes of index fields and categories.
Index Fields
Index Fields help searching and displaying data in the hit content of the search results.
The following index field types are available:
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Alphanumerical: stores words or text chunks.
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Numerical: stores both integer and decimal numbers. Decimal fields are stored with a fixed precision, which you can specify.
Numerical fields support the following operations:
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Equality
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Inequality
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Larger than, smaller than
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Range search ("from X to Y")
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Point: stores location data. For more information, see Configuring Geographic Search.
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Date
Categories
Categories store static facet values. These values display in the Refinements panel of the search results as well as in hit content. Static facet allow users to narrow their search results by focusing on a certain aspect of the results, such as a particular country or product line.
In the categories field, category values are stored in a tree. The root
of the tree is called Top.
For example, for a given document, the categories field could contain
the following categories:
Top/ Top/Source Top/Source/files Top/Language Top/Language/fr Top/Detected Entities/People/Mr. Jones Top/Detected Entities/People/Mrs. Singh
You can use categories for navigation over static categories. To enable this navigation, Exalead CloudView stores the retrievable part of the category in RAM.