Live and Extract are the data connections that one uses for data analytics and visualization in Tableau.
Extract connections are the snapshots of data organized for segregation or clustering. These snapshots load directly into Tableau’s memory for faster query processing for data visualization.
Whereas live connections are the connections to the data source that are directly linked to a database and relies on it for all the query processing and also undergoes real-time updates too.
In comparison, life connections are slower than extract connections.
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