Big data → large organized amount of data, with a meaning for us (or a purpose) Organized → Structured, Semi-structured, Unstructured
Metadata → “container” of big data Big data is part of metadata Metadata is data related to a data (for example, position, author, lens… for a photo)
- Structured data: a database, or generally organized data (excel files…) usually in medical fields or financial field
- Semi-structured data: shows some patterns, but hasn’t been organized yet (json…)
- Unstructured: no patterns, from different sources. Usually multimedia data (videos, emails) with different formats
- Raw data: any kind of data that hasn’t got a meaning/purpose yet
Data: raw material facts, useless to us Information: processed data useful to us