| Relationships |
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| Parents |
Element
| A data Element. This is the top level term in the PCS Data Dictionary, to which all other terms (Elements) are hierarchically linked. An Element can be of any size or granularity, from a single data value to a Message or suite of Messages. |
| Children |
Date
| A Date represented as a calendar Year, Month or Day (in ISO 8601:2004 format: YYYY, YYYY-MM or YYYY-MM-DD). |
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DateTime
| A Time represented by a Date and a Time within that Date (in ISO 8601:2004 format: YYYY-MM-DDThh:mm:ss) |
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Period
| A Time between two other Times. Periods in PCS are always described using the pcs:Period Composite. |