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metadata    
元数据

元数据

metadata
解释用资料;元数据

metadata
n 1: data about data; "a library catalog is metadata because it
describes publications"

/me't*-day`t*/, or combinations of /may'-/ or
(Commonwealth) /mee'-/; /-dah`t*/ (Or "meta-data") Data about
{data}. In {data processing}, metadata is definitional data
that provides information about or documentation of other data
managed within an application or environment.

For example, metadata would document data about {data
elements} or {attributes}, (name, size, data type, etc) and
data about {records} or {data structures} (length, fields,
columns, etc) and data about data (where it is located, how it
is associated, ownership, etc.). Metadata may include
descriptive information about the context, quality and
condition, or characteristics of the data.

A collection of metadata, e.g. in a {database}, is called a
{data dictionary}.

Myers of {The Metadata Company} claims to have coined the term
in 1969 though it appears in the book, "Extension of
programming language concepts" published in 1968, by {Philip
R. Bagley}. Bagley was a pioneer of computer document
retrieval. "A survey of extensible programming languages" by
Solntsseff and Yezerski (Annual Review in Automatic
Programming, 1974, pp267-307) cites "the notion of 'metadata'
introduced by Bagley".

(2010-05-15)


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英文字典中文字典相关资料:


  • Metadata - Wikipedia
    According to Ralph Kimball, metadata can be divided into three categories: technical metadata (or internal metadata), business metadata (or external metadata), and process metadata
  • What is Metadata? - GeeksforGeeks
    Metadata refers to data that provides information about other data It describes the structure, content and characteristics of a file, document, image or dataset, helping users and systems understand and manage data more effectively
  • Metadata | Definition, Examples, Standards | Britannica
    Metadata allows for the easy retrieval, management, and use of data It can be collected for any type of data, from the content of ancient scrolls to that of modern websites, and it can relate to any informational aspect of data, such as its origin, location, format, or quality
  • What is Metadata? A Guide to Understanding Data About Data
    Metadata is often described as “data about data,” providing information about a data item, file, or collection that helps us understand, find, and use it effectively
  • What is Metadata (with examples) - Data terminology
    Relational databases (most common type of database) store and provide access not only data but also metadata in a structure called data dictionary or system catalog
  • What is metadata and how does it work? - TechTarget
    Metadata is data that describes other data, providing a structured reference that helps to sort and identify attributes of the information it describes





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