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Learning Neo4j 3.x - Second Edition by Rik Van Bruggen, Jérôme Baton

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In-the-clickstream queries on live data

We all know that you can implement different database queries--such as the preceding example--in different kinds of database management systems. However, in most alternative systems, these types of queries would yield terrible performance on the live database management systems and potentially endanger the responsiveness of an entire application. The reaction of the relational database management industry, therefore, has been to make sure that these kinds of queries will be done on precalculated, preformatted data that will be specifically structured for this purpose.

This means duplicating data, denormalizing data, and using techniques such as Extract, Transform, and Load (ETL), that are often used ...

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