# Logical Record Architecture for Health and Social Care
## Discharge Summary Release 0.02

Contents
The content of this release is not comprehensive and is not fully validated and must not be used in live system implementations.
# Reference Model Class: TS.DateTime
This is implemented as described in ISO 21090. ## Specializes ## TS ## Attributes
Name | Data type | Occurs | Description
--- | --- | --- | ---
value | String | 0..1 | This is implemented as described in ISO 21090.
## Constraints
Type | Name | Specification
--- | --- | ---
DateTime | Invariant | inv: (value.size <= 14) or (hasTimezone and value.size <= 19)
## Reference Model Type ##