# Before you install

Before installing the Empirica Healthcare Analysis ETL utility, you must decide how you will transfer data, either by using a database link or by exporting to and then importing from data files. You specify this decision and other options in a properties file. Data is transferred using the Oracle Data Pump technology either across a database link or using exported files.

The following images describe your options for transferring data. Typically, the source and destination databases are hosted on different servers across a network, sometimes in different domains. However, the databases can be on the same machine and even within the same database instance.

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