# Data Model

## Entities

### WorkoutAnalysis (Cache)

- **Description**: Represents a cached workout analysis result. This is an in-memory object to speed up subsequent requests for the same analysis.
- **Fields**:
    - `activity_id`: The ID of the activity.
    - `analysis_summary`: JSON object containing the summary of the analysis.
    - `charts`: Dictionary of chart types to chart data.
    - `timestamp`: The time when the analysis was cached.

### AnalysisArtifact (CentralDB)

- **Description**: Represents a stored analysis artifact in the CentralDB. This is the long-term storage for the analysis results.
- **Fields** (based on the CentralDB API):
    - `id`: Unique identifier of the artifact.
    - `activity_id`: The ID of the activity.
    - `data`: JSON object containing the analysis results.
    - `created_at`: Timestamp of when the artifact was created.