September 2024
Intermediate to advanced
432 pages
13h 23m
Spanish
book
Cassandra: La Guía Definitiva, (Revisada) Tercera Edición, 3ª Edición
by Jeff Carpenter, Eben Hewitt
Content preview from Cassandra: La Guía Definitiva, (Revisada) Tercera Edición, 3ª Edición
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Capítulo 4. El lenguaje de consulta de Cassandra
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En este capítulo, comprenderás el modelo de datos de Cassandra y cómo se implementa mediante el Lenguaje de Consulta Cassandra (CQL). Mostraremos cómo CQL soporta los objetivos de diseño de Cassandra y veremos algunas características generales de su comportamiento .
Para los desarrolladores y administradores procedentes del mundo relacional, el modelo de datos Cassandra puede resultar difícil de entender inicialmente. Algunos términos, como keyspace, son completamente nuevos, y otros, como column, existen en ambos mundos pero tienen significados ligeramente distintos. La sintaxis de CQL es similar en muchos aspectos a SQL, pero con algunas diferencias importantes. Para quienes estén familiarizados con tecnologías NoSQL como Dynamo o Bigtable, también puede resultar confuso, porque aunque Cassandra se base en esas tecnologías, su propio modelo de datos es significativamente diferente.
Así que en este capítulo, partiremos de la terminología de las bases de datos relacionales e introduciremos la visión del mundo de Cassandra. Por el camino te familiarizarás con CQL y aprenderás cómo implementa este modelo de datos.
El modelo relacional de datos
En una base de datos relacional, la propia base de datos es el contenedor más externo que puede corresponder a una única aplicación. La base de datos contiene tablas. Las tablas ...
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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.