Data Catalog
Browse and query data sources.
Overview
The Data Catalog provides a unified view of all available data:
- Data Sources: Connected systems (PI servers, databases, edge agents)
- Tags: Individual data points within each source
- Schemas: Data structure definitions
Browsing Sources
Navigate to Data Catalog to see available sources:
| Column | Description |
|---|---|
| Name | Source identifier |
| Type | Source type (PI, SQL, OPC-UA) |
| Tags | Number of available tags |
| Status | Connection status |
Tag Discovery
Click a source to browse its tags:
- Search by tag name
- Filter by category or equipment
- View tag metadata (units, description, data type)
Querying Data
- Select tags to query
- Set time range (last hour, day, week, custom)
- Choose aggregation (raw, 1m, 5m, 1h averages)
- Click Run Query
Query Parameters
| Parameter | Description |
|---|---|
| Start Time | Beginning of time range |
| End Time | End of time range |
| Aggregation | Data roll-up interval |
| Limit | Maximum rows to return |
Export Data
Query results can be exported to:
- CSV file
- JSON format
- Direct to InfluxDB