---
title: "Data Model"
canonical: "https://wiki.patientsknowbest.com/space/api/3363700789/Data%20Model"
format: markdown
---
> Macro (toc)

**This Data Model is currently in draft.**

# Overview

This data model is intended to provide a high level overview of what a PKB medical record looks like. Rather than trying to show the entire model in one diagram, partial illustrations are given below that each take one topic as their focus.

# Entities

> Macro (pagetree)



# Data Types

|  |  |
| --- | --- |
| **Name** | **Description** |
| String | A textual value. |
| Local Date | A date. It contains no time information, and time zone processing is not applied. |
| Timestamp | A point in time with both date and time information. The point in time is evaluated within a time zone, and hence can be meaningfully displayed in an alternative time zone. |
| Number | A numerical value that can have a real value, i.e. not necessarily an integer. |
| Enum | A value that can only contain one of a predefined enumeration of values. |
| Boolean | A value that is either true or false. |
| Binary | Raw data. For example, the contents of an uploaded file. |
| Ref | A value which references an attribute in another entity. The data type will match that of the referenced attribute. |
| Coding | A compound value. Consists of:<br>- Code
- Code System
- Display Text |
| CodeableConcept | A compound value. Consists of:<br>- Display Text
- 0 or more Coding attributes |
| Identifier | A compound value. Consists of:<br>- System
- Value |