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Structured data tends to refer to information in “tables”
Employee | Manager | Salary | ||||||||
Smith | Jones | 50000 | ||||||||
Chang | Smith | 60000 | ||||||||
Ivy | Smith | 50000 | ||||||||
Typically allows numerical range and exact match
(for text) queries, e.g.,
Salary < 60000 AND Manager = Smith.
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