May 2012
Intermediate to advanced
200 pages
3h 39m
German
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Kapitel 8. Abfragen
Wie Sie es von einer Datenbank erwarten, können Sie mit CouchDB Daten indexieren, suchen, filtern, verarbeiten und sortieren. In SQL-basierten Datenbanksystemen wird das mit sogenannten Queries realisiert. Diese basieren auf der eigens dafür entwickelten Sprache SQL. In CouchDB kommt ein anderes Paradigma zum Einsatz. CouchDB ist explizit für parallele Verarbeitung entwickelt worden. Dabei wird ein großes Problem bzw. eine große Datenmenge in kleinere Einheiten geteilt, die dann unabhängig voneinander parallel verarbeitet werden. Somit können Sie Ihre Abfrage von unzähligen Computern verarbeiten lassen. Das ermöglicht es auch, riesige Datenmengen im Petabyte-Bereich schneller zu verarbeiten als mit dem herkömmlichen seriellen ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.