# Datasource Configuration
Starting from **ONEWEB version 4.0.0.19**, **App Designer** provides the ability to configure and manage **multiple Datasources**.\
Once a datasource is configured, entities can be set to use that datasource for querying table structures and data.
This feature adds flexibility by allowing Smart Forms to **connect to different databases** or data sources within the same application.
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### Purpose of Datasource Configuration
Datasource Configuration is used to:
* Define multiple database connections in App Designer
* Allow entities to query data from different datasources
* Support integration with heterogeneous data environments
* Improve scalability and flexibility of Smart Forms
* Enable multi‑database or external data access scenarios
***
### Accessing Datasource Configuration
To manage Datasources:
1. Navigate to **DEV ZONE**
2. Open **App Designer**
3. Click the **Utilities** menu
4. Select **Datasource Configuration**
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### Viewing Existing Datasources
After opening Datasource Configuration:
* The system displays a list of **existing configured datasources**
* Each datasource represents a database connection available to App Designer
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### Creating a New Datasource
To create a new datasource:
1. Click the **Add** icon 
2. The **Datasource Configuration** screen opens
3. Enter the required datasource details (e.g. name, connection properties)
4. Click **Save**
Once saved, the new datasource becomes available for use in entities.
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### Using a Datasource in an Entity
After configuring a datasource:
* Open the target **Entity**
* Go to **Entity Configuration**
* Set the newly created datasource as the **System Code**
* Save the entity
Once configured, the entity will use the selected datasource to:
* Retrieve table metadata
* Query data during form operations
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### Important Considerations
* Datasource Configuration affects how entities interact with databases
* Ensure datasource credentials and connectivity are correct
* Changing datasource for an existing entity may impact behavior
* Test entity functionality after switching datasources
* Restrict datasource management access to authorized users only
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### Usage Guidelines
* Use separate datasources for different environments or systems
* Clearly name datasources to indicate purpose or target database
* Avoid frequent datasource changes on production entities
* Coordinate datasource configuration with database administrators
* Validate permissions and schema compatibility
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### Summary
**Datasource Configuration** enhances App Designer by enabling **multi‑datasource Smart Forms**.
Key points:
* Available from ONEWEB version 4.0.0.19 onward
* Allows configuration of multiple database connections
* Entities can be bound to a selected datasource
* Improves flexibility and integration capabilities
* Essential for advanced data architecture scenarios
Used properly, Datasource Configuration allows ONEWEB applications to **scale across multiple data sources while maintaining clean and manageable entity designs**.
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