Page Comparison

Overview

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Data Source Details

The detail section contains metadata that assists users select the right source and view for their reports.

1. Type in the Business name and description for the source – this is displayed to an end user when writing reports to assist them to make the correct decision about the source of the data they wish to report off.
2. Using the max row limit you can constrain the maximum size of a query against the source – you may choose unlimited as depicted.
3. Allowing the database to be Writable will enable you to use this source to store either view caching data or imported csv data.
4. If you have set the source to writable you will have the option to make the source the default storage for csv imports.
5. Define the time zone region for the source – this is used for managing scheduling and broadcasting if your users are located in a different time zone from the source system.
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Security Setting

The security settings allow you to determine whether access to the connection needs to be restricted, whether to apply source filters and whether broadcasts are permitted.

1. Select Unsecure or Secure. If you select secure an additional step will be added to your connection wizard.
2. Permissions against the source allow you to determine what actions are permitted. You may choose to stop users from creating broadcast reports or subscribing to reports that are initiated from the source.
3. Source Filters are used to create Privatised filters for users based on data within the source.
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See ソースセキュリティ and ソースアクセスフィルター for more information.

Connection Parameters

The connection to the source system must be specified. The connection parameters define how Yellowfin accesses a database.

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Locate <param-name>JDBCDrivers</param-name> in the file, and add your driver to the list, for example:

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      <param-name>JDBCDrivers</param-name>
      <param-value>
         com.ddtek.jdbc.openedge.OpenEdgeDriver, <!-- New driver added to list -->

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In Memory (Columnar) DB Connection Parameters

Connection settings for the in-memory database don’t have variables so you only need to select ‘Columnar DB’ from the database list.

1. You will not be required to set a username or password for this connection, so just leave the fields blank.
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2. To test the connection, click the ‘test connection link’. There will be a popup message informing you that no username was set, click OK. If successful a connection succeeded message will be displayed.
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3. The source is now ready for use to cache views to.

For more information on the In Memory DB and whether it's right for your situation, see this Yellowfin Forum post: http://www.yellowfinbi.com/YFForum-How-does-the-In-Memory-DB-work-and-will-it-make-my-reports-run-faster-?thread=108180

Database Specific URL Formats

Each database platform has its own specific connection string parameters. The table below provides you with a guideline for completing the database URL. The port numbers provided are the default port numbers for the specified database. You will need to confirm the port details for the database that you are connecting to.

ODBC Connections - JDBC-ODBC Bridging

If you intend to connect Yellowfin to a database which does not have a native JDBC driver (e.g. Lotus Notes and MS Access) then you will need to use a JDBC-ODBC connector. You will still select connection method and JDBC but the driver you select will have to be a bridge to the ODBC source.

Included with the standard Java Runtime environment is the Sun JDBC-ODBC driver. This driver allows a JDBC connection to an existing ODBC source. In all cases it is more reliable to connect to a database via a native JDBC driver. In the case that a JDBC driver doesn’t exist for the source database, this may be a viable alternative.

On the database source page, by default, the Sun JDBC-ODBC driver will be available in the driver drop down. It is listed as sun.jdbc.odbc.jdbcodbcDriver.

The syntax for this driver is:
jdbc:odbc:<data-source-name>[ ;<attribute>=<value>]
where data-source-name is a registered ODBC data-source, followed by any data-source specific attributes.

For more information about the Sun JDBC-ODBC driver please visit: http://java.sun.com/j2se/1.5.0/docs/guide/jdbc/getstart/bridge.doc.html

Note: You can also consider using 3rd party JDBC-ODBC bridges that have been optimised for the database you wish to connect to. Please see the installation manual for more details.

Connection Management

The connection management section provides the mechanism for optimising the connections to the data source.

1. Complete the Minimum and Maximum connections. These determine the number of connection within the connection pool.
   For example if you have a maximum of 5 connections and 5 users create very large reports at the same time no other user will be able to access the source until these reports have completed processing.
   Yellowfin automatically creates and keeps the minimum connects open and will use up-to the maximum if required. Setting the connections permits you to optimise system resources.
2. Refresh Time is hours before the database connections are refreshed.
   The refresh recycles the connections after the set period. This is done to ensure that no connections have become stale / or been left open even though the user is no longer using them.
3. The timeout is the time that is allowed for the SQL statement to return results. If queries against this source are likely to be large this field will have to be set to accommodate them.
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Connection Availability

To disconnect from a source database you can make a connection unavailable. This is useful if the DBA of the source database requires all connections to that database to be closed. Select unavailable from the connection management options.

Note: Whilst the connection is closed users will not be able to edit or add views or run any reports from the source.

OLAP Source Connection

An OLAP source connection differs from a standard JDBC connection.
Select XMLA OLAP as the connection type. Refer to OLAP connection documentation for details for each OLAP source type.

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Database Connection Issues

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概要