attributeValue

Attributevalue refers to the data assigned to an attribute, property, or field in computing contexts. It represents the actual content or metadata that defines or qualifies an element or record and is distinguished from the attribute name.

In markup languages such as HTML and XML, an attribute consists of a name and a value. The value is typically a string, written in quotes, and may require escaping for special characters. Some HTML attributes are boolean, where the mere presence of the attribute implies a true condition.

In data modeling and databases, an attribute value is the data stored in a field corresponding to an attribute of an entity. Values have types, constraints, and may be null. The choice of data type influences storage, indexing, and validation rules, and schemas may enforce rules about format, range, or required presence.

In specific systems, the term AttributeValue is used as a structured data type. For example, in DynamoDB, an AttributeValue represents a single item attribute and can encode strings, numbers, binaries, booleans, nulls, and collections. The representation uses type tags (such as S for string and N for number) and supports nested structures like maps and lists, enabling flexible and hierarchical data modeling.

Attribute-value pairs also appear in knowledge representation and data exchange, where resources are described by relations of the form attribute=value or through subject-predicate-object structures, depending on the model.