June 2022
Intermediate to advanced
328 pages
5h 31m
German
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KAPITEL 1
SQL-Crashkurs
Dieses kurze Kapitel bietet Ihnen einen schnellen Einstieg in die grundlegende SQL-Terminologie und die SQL-Konzepte.
Was ist eine Datenbank?
Beginnen wir ganz von vorn. Eine Datenbank ist ein Ort, an dem man auf organisierte Art und Weise Daten ablegen kann. Es gibt viele Möglichkeiten, Daten zu organisieren, und entsprechend gibt es viele Datenbanken, unter denen man wählen kann. Die zwei Kategorien, in die Datenbanken fallen, nennen sich SQL und NoSQL.
SQL
SQL ist die Abkürzung für Structured Query Language (strukturierte Abfragesprache). Stellen Sie sich vor, Sie hätten eine App, die sich die Geburtstage all Ihrer Freunde merkt. Mit sehr hoher Wahrscheinlichkeit würden Sie SQL verwenden, um mit dieser App zu reden. ...
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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.
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.