Metadata

Metadata is "data about data": descriptive information attached to a file, record, or web page. It tells you what something is, who made it, when, and how to use it, without being the content itself.

Why it matters

Metadata makes data searchable, auditable, and governable. In a data lake it is how people find datasets; in photos it records camera and location; on web pages, meta tags feed search results and link previews, which you can inspect with the meta tag checker.

Example

Common kinds:

File:    name, size, modified date, MIME type
Photo:   camera model, timestamp, GPS (EXIF)
Page:    <title>, meta description, Open Graph tags
Dataset: owner, schema, update frequency, license

Common mistakes

• Sharing files without stripping metadata that reveals location, author, or revision history.
• Letting dataset descriptions go out of date.
• Assuming metadata is trustworthy; it can be missing or edited.

Related

• Dataset
• Data lake
• Vector database
• Structured vs unstructured data

यह पेज सामान्य जानकारी है, जिसे हमारी संपादकीय टीम ने लिखा है और दस्तावेज़ीकरण बदलने पर अपडेट किया जाता है। सर्वर और प्रदाता अलग-अलग होते हैं, इसलिए बदलाव पहले सुरक्षित तरीके से जाँचें। देखें: संपादकीय नीति और अस्वीकरण.