5. Investigating the content of the indexes
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## 5. Investigating the content of the indexes

How does the magic work? What is inside the indexes? Why is a certain record found by a search, and another not?. The answer is in the inverted indexes. You can easily investigate them using the special Zebra schema `zebra::index::fieldname`. In this example you can see that the `title` index has both word (type `:w`) and phrase (type `:p`) indexed fields, http://localhost:9999/?version=1.1&operation=searchRetrieve&x-pquery=the&startRecord=1&maximumRecords=1&recordSchema=zebra::index::title

But where in the indexes did the term match for the query occur? Easily answered with the special Zebra schema `zebra::snippet`. The matching terms are encapsulated by `<s>` tags. http://localhost:9999/?version=1.1&operation=searchRetrieve&x-pquery=the&startRecord=1&maximumRecords=1&recordSchema=zebra::snippet

How can I refine my search? Which interesting search terms are found inside my hit set? Try the special Zebra schema `zebra::facet::fieldname:type`. In this case, we investigate additional search terms for the `title:w` index. http://localhost:9999/?version=1.1&operation=searchRetrieve&x-pquery=the&startRecord=1&maximumRecords=1&recordSchema=zebra::facet::title:w

One can ask for multiple facets. Here, we want them from phrase indexes of type `:p`. http://localhost:9999/?version=1.1&operation=searchRetrieve&x-pquery=the&startRecord=1&maximumRecords=1&recordSchema=zebra::facet::publisher:p,title:p

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