Remote storage is available since BellaDati 2.9
Remote storage enables to store Data set in a remote database instead of the database used by BellaDati. It is used to decrease the load on the main server and to increase the performance when working with large amounts of data.
Remote storage is currently available for these types of databases:
setting up remote storage
Please note that Remote storage functionality needs to be enabled in the license and in the domain.
Remote storage can be set up only by domain administrator.
Remote Storage can be configured for the whole domain or for each data set individually.
It is possible to set up a global remote storage for the whole domain. When used, all data sets will be stored in the selected database by default.
The remote storage can be enabled in the Advanced settings of the domain.
As a next step, the user has to select an existing database connection or create a new one, by filling in the following information:
After clicking on Continue, the Remote storage will be connected and it will be used as the default storage for all newly created data sets. Existing data set will remain unchanged, including the data. To apply the changes, the users need to sign out and sign in again.
Data set settings
Remote storage can be set up by opening Advanced settings in the Settings menu on Data Set detail page and clicking on Edit link in the Remote storage section.
You can use already existing database connection or create a new connection to a database.
Only PostgreSQL database of version 9.0 or newer is supported for Remote storage.
Switching from Local to Remote storage and vice-versa will remove all data in the data set. Attributes, indicators and all other settings will remain unchanged.
switching to local STORAGE
To switch Data set using Remote storage to use Local storage (the database used by BellaDati) open Advanced settings in the Settings menu on Data Set detail page and clicking on Edit link in the Remote storage section.
Under New storage setting check Set to local storage and hit Continue.
Joined data sets
When using remote storage, data set can be joined only with data sets located in the same remote storage.
Using Microsoft SQL Server as Remote Storage
This feature is available since BellaDati 220.127.116.11
It is possible to use Microsoft SQL Server as remote storage. Currently, versions Server 2016 and Server 2017 are supported. When defining the database connection, users can switch from PostgreSQL to Microsoft SQL Server. Further steps are the same as when working with PostgreSQL. Currently, there are following known issues:
- unsupported aggregations: median, all regression functions
- unsupported functions: histogram
- not supported features:
- translation and appearance
USING Oracle Database AS REMOTE STORAGE
This feature is available since BellaDati 2.9.12
It is possible to use Oracle Database as remote storage. Currently, version Oracle 12c is supported. Also, the container databases are not supported at the moment. When defining the database connection, users can switch from PostgreSQL to Oracle Database. Further steps are the same as when working with PostgreSQL. Currently, there are following known issues:
- unsupported aggregations: median, quartile1st, quartile3rd, correlations
- unsupported functions: histogram, xy chart
- not supported features:
- joined data sets
The user, which is used to connect to the Oracle database, has to have a specific set of privileges. For testing purposes and internal environments, it is possible to use a database administrator (DBA). For production environments, we recommend creating a user which will have only the necessary privileges, assigned by following queries (executed by the administrator):
When the remote storage is configured, BellaDati will automatically create a new user in the Oracle database. The user will have the same name as the domain in BellaDati (e.g. DS_DOMAIN1). It is necessary to assign a tablespace quota for this user in tablespace users (or the tablespace which is used instead of the default one).
When Oracle is used as remote storage, a special SQL query without logging is used when using the import method Delete all rows in data set. This is done to improve the performance of the import.