This means you don't need to define a rigid, fixed structure before data insertion. Each record can have its own structure, allowing flexibility for evolving data models. This is useful for unstructured or semi-structured data.
Why the other options are incorrect:
B:This describes relational databases.
C:This describes the structured nature of SQL databases.
D:While binary formats may be used, schema-less refers to the logical, not physical, structure.
[References:Oracle NoSQL Database Service Overview, , , ]
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