Datasource
- Former user (Deleted)
- Anthony George
- Gary Parden
This page is for data modellers who want to connect to an external database, either to load data or to export processed data back to it.
Overview
A datasource is a modelling object whose properties provide the information needed to connect to an external database. You must have one datasource for each type of database to which you need to connect. In an analysis model, you can add:
- a Database Collector to load data from a database.
- a Database Exporter to update the database with processed data from the model.
The datasources you create appear in the Basic Settings → Datasource list in collector and exporter properties.
Each datasource must have at least one datasource instance. You can add several instances if you want to configure different settings. For example you may want to connect to the same database using a different username and password for different scheduled tasks.
In the properties for collectors and exporters, you can optionally specify the datasource instance using the Advanced → Datasource Instance Expression.
To add a new datasource to an analysis model:
- Go to the model's toolbar → Create group.
- Click
Database to expand the menu. - Drag a
Datasource onto the analysis model.
To add an existing datasource to an analysis model, in the model diagram toolbar:
- Go to the model toolbar → List group.
- Click Database to expand the menu.
- Click Datasource to open the list of available datasources.
- Drag a datasource into the analysis model.
Property Pane Toolbar
For information about the toolbar options, see the Common Properties page, Toolbars and Controls section.
Datasource 
Properties Tab
Parent Details
If this item is within or belongs to another, its parent name is shown here. See the Parent Details section on the Common Properties page for more details.
Basic Settings
In addition to the standard icons, the properties toolbar includes 
Show Tables, which opens a list of tables visible for this datasource using the default login details; see the Table Details window.
For a datasource, you must:
- Enter a Name.
- Select a Database Driver.
- Add at least one datasource instance.
- Tick the Enabled check box when it is ready to use.
We recommend you tick Protect during import to prevent this datasource being updated or deleted during import.
| Field | Description |
|---|---|
| Name | Enter the name for this datasource. It is helpful to use a name that reflects the type of database to which it will connect. This name appears in the Datasource drop-down list for database collectors and exporters. |
| Enabled |
|
| Protect during import |
Exception: If the datasource parent and the datasource have been deleted in the source instance, then the import deletes the datasource from the target instance. This prevents orphaned datasources persisting in PhixFlow. |
| Database Driver | Select the database driver for the type of database to which the datasource connects. The drop-down list may contain database drivers that are deprecated and do not have the necessary jar files; see Database Driver. When a database driver is selected, to open its properties, click the blue chevron |
Datasource Instances
This section has a toolbar with standard buttons.
The grid contains a list of datasource instances that belong to this datasource. Double-click on a row to open the datasource instance properties.
To add a datasource to the list, click 
Create New . PhixFlow opens the properties for a new datasources instance; see Datasource Instance Properties, below.
To remove a datasource instance from the grid, use the toolbar button 
Delete.
Database Collectors
This section has a toolbar with standard buttons.
The grid contains a list of database collectors that use this datasource. Double-click on a row to open the database collector properties. You can change whether or not the collector uses this datasource or whether the collector is enabled.
Any changes you make will affect the analysis models in which the collector is used.
Rate Limiting
Rate limiting can be used to limit traffic and help stability. It works by restricting the number of requests that can be sent.
For Database Exporters this set per batch of records committed to the database, controlled by its Commit Size option.
| Field | Description |
|---|---|
| Rate Limiting | Toggle on or off to restrict the number of requests. |
| When enabled the following options are available: | |
Request Capacity | Maximum number of requests that can be sent during the time period defined by the Request Capacity Rate (ms). |
Request Capacity Rate (ms) | Defines the time period, in milliseconds, in which requests can be processed. The number of requests processed during this period is defined by the Request Capacity and the Maximum Rollover Requests. |
| Maximum Rollover Requests (Optional) | The maximum number of requests that can be saved, to be sent later. Defaults to the Request Capacity. |
| Maximum Parallel Requests (Optional) | The maximum number of requests that can be sent at the same time. Note: If more than the allowed number of requests are queued, as soon as a request is finished, another is sent. |
| Requests in Queue | A read-only field which displays the number of requests waiting to be sent when the properties were opened. |
Rate Limiting Example
Request Capacity: 80
Request Capacity Rate: 30000ms
Maximum Rollover Requests: 101
| Time | Request Capacity | Pending Requests | Sent Requests | Requests Remaining | Request Capacity Remaining | Maximum Rollover Requests |
|---|---|---|---|---|---|---|
| 0s | 80 | 100 | 80 | 20 | 0 | 0 |
| 30s | 80 | 20 | 20 | 0 | 60 | 60 |
| 60s | 80+60 | 0 | 0 | 0 | 140 | 101 |
| 90s | 80+101 | 100 | 100 | 0 | 81 | 81 |
| 120s | 80+81 | 0 | 0 | 0 | 161 | 101 |
| 150s | 80+101 | 150 | 150 | 0 | 31 | 31 |
| 180s | 80+31 | 0 | 0 | 0 | 111 | 101 |
Advanced
| Field | Description |
|---|---|
| Internal ID | Read-only. PhixFlow displays the identifier for this datasource. The PhixFlow support team may ask for this identifier during troubleshooting. |
Analysis Models
This section has a toolbar with standard buttons.
The grid contains a list of analysis models that use this datasource. Double-click on a row to open the analysis model properties.
Description
We recommend that you always enter a description to explain the purpose of this item.
Audit Tab
Audit Summary
See the Common Properties page, Audit Summary section.
Datasource Instance Properties Tab
Parent Details
If this item is within or belongs to another, its parent name is shown here. See the Parent Details section on the Common Properties page for more details.
Basic Settings
For a datasource instance, you must:
- Enter a Name.
- Enter the URL for the database.
- Specify the Username and Password.
- Tick the Enabled check box when it is ready to use.
Other settings are optional.
| Field | Description | |
|---|---|---|
Name | Enter the name for this instance. In the properties for collectors and exporters, you can specify this instance by using its name in the Datasource Instance Expression. | |
| Enabled |
| |
| URL | Enter the URL for the target database. Example URLs
| |
| Authorisation Type | Select:
| |
| Username | Enter a username. | These options are available when Authorisation Type is Local. This username and password must match an account that is configured to access the datasource instance. PhixFlow connects to the datasource using this username and password. |
| Password | Enter a password. | |
| Username Key | Enter the key that identifies the username in the keystore. | These options are available when Authorisation Type is External. The keys must match a username and password stored in the keystore and these are configured to access the datasource instance. PhixFlow connects to the datasource using this username and password. Your system administrator adds usernames, passwords and their aliases (keys) to the keystore. They will notify you of the key to use. See Adding Data to a Keystore. |
| Password Key | Enter the key that identifies the password in the keystore. | |
Advanced
Only use these options if you know about database connections and SQL queries. For help with these options, contact support@phixflow.com.
| Field | Description |
|---|---|
Check Query | Use this field when connections to the target database might go stale. This can happen if the target database disconnects long-running connections. Enter a database query that will return a row from the database. PhixFlow runs the query against the database just before each use of a pooled connection. If the query does not return a row, the connection is discarded and a new connection is created. To avoid any performance impact, the query should execute quickly. See the Query String section of the Database Collector page for information about writing SQL queries in PhixFlow. |
| Datasource Profile | Use this field when the target database has additional requirements not covered by the datasource and datasource instance properties. Enter the path to an external datasource connection profile. PhixFlow will use the configuration information in the profile to connect to the target database. |
| Description | Optionally enter a information about the advanced configuration. |
Remember to click 
Apply and Close to save and close the datasource instance properties and return to the datasource properties tab.
Audit Tab
Audit Summary
See the Common Properties page, Audit Summary section.
Learn More
For links to all pages in this topic, see Analysis Models for Batch Processing Data.
Terminology changes in progress
As part of the redesign of PhixFlow, we are changing the following terms:
dashboard → screen
stream → table
stream attributes → attributes
stream item → record
stream set → recordset
stream view → view
stream item action → record-action
stream action → table-action
driver class → database driver