# Data Connectivity

### Database Connectors <a href="#database-connectors" id="database-connectors"></a>

* Supported engines: PostgreSQL, MySQL, SQL Server, Oracle
* Configure connection strings and credentials in `config.yml`
* Test and validate connections via CLI:

  ```
  bashainexlayer db test
  ```
* Monitor connector health in the admin dashboard\ <br>

  <figure><img src="/files/YG7iQTONlvhctPLR6qSj" alt=""><figcaption></figcaption></figure>

> **Tip:** Use read replicas for analytics workloads to reduce load.

### API Integrations <a href="#api-integrations" id="api-integrations"></a>

* Connect to REST and GraphQL endpoints
* Define authentication (API keys, OAuth2) per integration
* Map endpoint responses to AINexLayer schemas
* Schedule periodic syncs or use webhooks for real-time updates

> **Note:** Use rate limiting to avoid API throttling.

### File System Integration <a href="#file-system-integration" id="file-system-integration"></a>

* Mount NFS or SMB shares for direct file access
* Configure local import paths in `storage.yml`
* Watch directories for automatic ingestion
* Apply file filters by extension or pattern


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