2. Which Boolean operator is used to broaden a search by including either of two keywords?单项选择题
A
A. AND
B
B. NOT
C
C. OR
D
D. NEAR

Question

2. Which Boolean operator is used to broaden a search by including either of two keywords?

BlackTom AI · Accepted Answer

Consider the goal of broadening a search to include either of two keywords.
Option A: AND. Using AND between two terms typically narrows a search because results must contain both terms. This does not broaden; it constrains.
Option B: NOT. NOT excludes results that contain a specified term, which also narrows the results rather than broadening.
Option C: OR. The OR operator is used to include either term, effectively widening the search to cover documents that contain one or the other keyword (or both). This is the classic method to broaden results.
Option D: NEAR. The NEAR operator specifies proximity between terms, which can refine results by ensuring terms appear close together; this often narrows rather than broadens, depending on the database implementation.
In summary, the operation that expands the search to cover documents containing either keyword is OR, because it unites the sets of results for each term rather than intersecting them or excluding them.

2. Which Boolean operator is used to broaden a search by including either of two keywords?单项选择题

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