attributevalueSisältötagname
Attribute value is the concrete data assigned to a named attribute of an entity within a data model. An attribute defines a property or characteristic of an entity type, while the attribute value is the actual data held for that property in a specific record or instance.
In relational databases, attribute values are stored in columns, and each column enforces a data type and
Common value types include scalar types such as strings, numbers, booleans, and dates or timestamps. Some systems
Constraints on attribute values help maintain data quality. These may specify permitted formats (for example, an
Attribute values are central to querying, updating, and validating data. They are often serialized for data