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Data (such as text data, emails, photos, and video images) that cannot be treated routinely. Unlike management of structured data, management of unstructured data in a database is difficult.
As the application range of computers has broadened, the amount of unstructured data has grown year by year. In recent years, utilizing unstructured data in the business domain has resulted in the need for a processing technology for rapidly and efficiently processing and analyzing unstructured data.

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