September 2024
Intermediate to advanced
738 pages
23h 26m
Spanish
book
Python en una cáscara de nuez, 4ª edición
by Alex Martelli, Anna Martelli Ravenscroft, Steve Holden, Paul McGuire
Content preview from Python en una cáscara de nuez, 4ª edición
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
Capítulo 12. Persistencia y bases de datos
Este trabajo se ha traducido utilizando IA. Agradecemos tus opiniones y comentarios: translation-feedback@oreilly.com
Python admite varias formas de persistir los datos. Una forma, la serialización, ve los datos como una colección de objetos Python. Estos objetos pueden serializarse (guardarse) en un flujo de bytes, y posteriormente deserializarse (cargarse y volver a crearse) desde el flujo de bytes. La persistencia de los objetos se basa en la serialización, añadiendo funciones como la denominación de objetos. Este capítulo cubre los módulos de Python que soportan la serialización y la persistencia de objetos.
Otra forma de hacer persistentes los datos es almacenarlos en una base de datos (BD). Una categoría sencilla de BD son los archivos que utilizan el acceso por clave para permitir la lectura selectiva y la actualización de partes de los datos. Este capítulo cubre los módulos de la biblioteca estándar de Python que admiten diversas variaciones de dicho formato de archivo, conocido como DBM.
Un sistema de gestión de BD relacional (SGBDR ), como PostgreSQL u Oracle, ofrece un enfoque más potente para almacenar, buscar y recuperar datos persistentes. Las BD relacionales se basan en dialectos del Lenguaje de Consulta Estructurado (SQL) para crear y modificar el esquema de una BD, insertar y actualizar datos en la BD y consultar la BD con criterios de búsqueda. (Este libro no proporciona material de referencia sobre SQL; para ello recomendamos ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.