Identification scheme
Encyclopedia
In metadata
, an identification scheme is used to identify unique records in a set.
If a data element is used to identify a record within a data set
, the data element uses the Identifier representation term
.
An identification scheme should be contrasted with a classification scheme
. Classification schemes are used to classify individual records into categories. Many records in a data set may be in a single category.
Metadata
The term metadata is an ambiguous term which is used for two fundamentally different concepts . Although the expression "data about data" is often used, it does not apply to both in the same way. Structural metadata, the design and specification of data structures, cannot be about data, because at...
, an identification scheme is used to identify unique records in a set.
If a data element is used to identify a record within a data set
Data set
A data set is a collection of data, usually presented in tabular form. Each column represents a particular variable. Each row corresponds to a given member of the data set in question. Its values for each of the variables, such as height and weight of an object or values of random numbers. Each...
, the data element uses the Identifier representation term
Representation term
A representation term is a word, or a combination of words, that semantically represent the data type of a data element. A representation term is commonly referred to as a class word by those familiar with data dictionaries...
.
An identification scheme should be contrasted with a classification scheme
Classification scheme
In metadata a classification scheme is a hierarchical arrangement of kinds of things or groups of kinds of things. Typically it is accompanied by descriptive information of the classes or groups. A classification scheme is intended to be used for an arrangement or division of individual objects...
. Classification schemes are used to classify individual records into categories. Many records in a data set may be in a single category.
See also
- Classification schemeClassification schemeIn metadata a classification scheme is a hierarchical arrangement of kinds of things or groups of kinds of things. Typically it is accompanied by descriptive information of the classes or groups. A classification scheme is intended to be used for an arrangement or division of individual objects...
- MetadataMetadataThe term metadata is an ambiguous term which is used for two fundamentally different concepts . Although the expression "data about data" is often used, it does not apply to both in the same way. Structural metadata, the design and specification of data structures, cannot be about data, because at...
- Representation termRepresentation termA representation term is a word, or a combination of words, that semantically represent the data type of a data element. A representation term is commonly referred to as a class word by those familiar with data dictionaries...