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66 lines
2.6 KiB
Markdown
66 lines
2.6 KiB
Markdown
---
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title: Collate ER Diagrams | Visualize Data Relationships
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slug: /how-to-guides/data-discovery/er-diagrams
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collate: true
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---
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# Collate: Entity Relationship (ER) Diagrams
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## Overview
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Entity Relationship (ER) Diagrams in Collate provide a visual representation of how tables are connected within a database. These diagrams offer a complete picture of your data structure by automatically detecting relationships based on constraints such as **primary keys** and **foreign keys** during metadata ingestion.
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{% youtube videoId="thC9fRDmR_U" start="0:00" end="1:30" width="800px" height="450px" /%}
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## Automatic Detection of Relationships
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Collate's [**metadata ingestion workflow**](/connectors/ingestion/workflows/metadata) identifies and extracts table relationships, ensuring that **primary key** and **foreign key** constraints are accurately represented. Once ingestion is completed, users can access ER diagrams at both the **table level** and **database schema level**.
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## Features of ER Diagrams
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### Visualizing Table Relationships
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- ER diagrams display **tables, constraints, and relationships** between them.
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- **Relationship cardinality** is clearly indicated, helping users understand data connections.
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{% image
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src="/images/v1.9how-to-guides/discovery/table-relationships.png"
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alt="Visualizing Table Relationships"
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caption="Visualizing Table Relationships"
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/%}
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### Interactive Exploration
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- Users can navigate from table to table by following relationships.
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- Enhances **data discovery** by making it more intuitive and efficient.
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### Editing Relationships
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- Modify existing relationships by **updating their type**.
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- **Add or remove** relationships to reflect changes in the database structure.
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### Table View for Simplified Insights
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- In addition to the diagram, Collate offers a **table view** listing all relationships in a structured format.
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- Provides a **quick overview** of data dependencies.
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{% image
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src="/images/v1.9how-to-guides/discovery/table-view.png"
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alt="Table View for Simplified Insights"
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caption="Table View for Simplified Insights"
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/%}
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## Benefits of ER Diagrams
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### Improved Database Understanding
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- ER diagrams create a **common language** for database discussions.
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- Helps teams **visualize complex relationships** and constraints.
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### Enhanced Troubleshooting & Impact Analysis
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- Users can quickly **identify table relationships** and assess the impact of schema changes.
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- Assists in **debugging and optimizing database structures**.
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With **Collate's ER Diagrams**, users gain **greater visibility** into their data relationships, improving **data discovery, governance, and analysis**.
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