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Siebel Analytics Server Administration Guide > Setting Up Disconnected Analytics >
Synchronizing Disconnected Analytics Applications
Synchronization is the mechanism that downloads data from the enterprise analytics machine to the disconnected machine for each user. The first time synchronization occurs, all historical data is downloaded. After the first synchronization, the incremental synchronization feature allows incremental data downloads. Currently, synchronization only downloads data to the mobile machine. It cannot upload data from the mobile machine to the enterprise machine. A user can download data in the following modes:
- Online mode. The user submits the data set generation query in real time. The server generates and returns the data to the user. In this mode, the user must wait until the entire data set has been downloaded to their machine. Therefore, online synchronization should only be used occasionally and when a specific need requires it.
- Preprocessed mode. The administrator schedules the data set generation on the server. This requires that you have installed and set up Siebel Delivers. The data sets are generated for each user and maintained until a new data set is generated. The Siebel Analytics Server does not delete the data sets. When a user synchronizes their application, the preprocessed data sets for that user are identified and then downloaded by the Disconnected Analytics Application Manager. Therefore, the amount of time required for synchronization depends on the speed of this compressed data set download.
This section discusses the following topics about data synchronization:
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