How deeply does MongoDB 8.0 in Action, Third Edition cover keyword query?

Explains tokenization, lowercasing, inverted-index matching, relevance scoring, and logical operators.

Keyword query

As explained in MongoDB 8.0 in Action, Third Edition

A search query is an expression specifying terms, phrases, conditions, or patterns to match against indexed content.

A keyword query specifies terms or phrases to match against indexed content. Apache Lucene tokenizes and normalizes query text, matches tokens through an inverted index, and ranks returned documents by relevance. section 11.2

Lucene query behavior varies with the terms supplied:

"No Violation Issued Mobile Food Vendor - 881" matches both sample documents because both contain the two query tokens. section 11.2
"No Violation Issued BRONX" returns only the document containing both the result and city terms. section 11.2
"Mobile Food Vendor - 881 PALMER AVE" produces a precise match for the document containing both sector and street terms. section 11.2
Logical operators such as AND, OR, and NOT can refine which indexed documents match. section 11.2

Table 11.1 Apache Lucene inverted index

Token	Document 1	Document 2
`LISANDRO CABRERA`	+
`AZMY KIROLES`		+
`BRONX`	+
`JERSEY CITY`		+
`PALMER AVE`	+
`VROOM ST`		+
`10475`	+	+
`7306`
`2234`	+
`160`		+
`NO VIOLATION ISSUED`	+	+
`MOBILE FOOD VENDOR - 881`	+	+
`JUL 17 2015`	+
`DEC 23 2015`		+

The inverted-index listing maps normalized tokens such as BRONX, PALMER AVE, and NO VIOLATION ISSUED to the documents containing them. section 11.2

How MongoDB 8.0 in Action, Third Edition covers it

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Also explained in

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Grokking Relational Database DesignKeyword searching is a query technique that finds records containing specified words or terms in text.
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Elasticsearch in Action, Second EditionA search query is a request that evaluates query criteria against indexed documents to retrieve matching results.

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Related concepts

percolate querycontrasts with · An Elasticsearch percolate query matches stored queries against a supplied document.
logical AND operatorconfigured by · A logical AND operator is a Boolean conjunction that produces true exactly when all operands have true truth values.
information retrievaladdressed by · Information retrieval is the process of locating and selecting relevant information from an available collection in response to a query or information need.
similarity searchcontrasts with · Similarity search is a retrieval technique that finds or ranks items by comparing their representations with a query according to a similarity or distance measure.
text analysisuses · Text analysis is the computational examination of textual content to extract information, identify patterns, or derive meaning.
logical ORuses · Logical OR is a Boolean disjunction that evaluates to true when at least one operand or condition is true.

This explainer was generated by Manning's knowledge graph from the text of MongoDB 8.0 in Action, Third Edition. The section links point to the parts of the book it draws on.