Which type of data organization allows information to be stored without a predefined schema, offering flexibility but making the data less organized for querying?
Non-structured
Relational
Semi-structured
Structured
Non-structured data, also called unstructured data, does not conform to a predefined data model or schema. Because the format is not restricted, the same data store can hold documents, images, audio, and many other types in their native form, giving organizations flexibility when capturing diverse information. However, the absence of consistent structure makes traditional query methods less effective. In contrast, structured data relies on a rigid schema, stored in tables with clearly defined rows and columns, enabling efficient SQL queries. Semi-structured data falls between these two extremes: it does not use relational tables but does contain tags, keys, or other markers (such as JSON or XML) that give it a loose organization, allowing it to be parsed and analyzed more easily than fully non-structured data.
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