June 2022
Intermediate to advanced
328 pages
5h 31m
German
Content preview from SQL – kurz & gut , 3rd EditionBecome 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,
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KAPITEL 5
Erzeugen, Aktualisieren und Löschen
Der größte Teil dieses Buchs behandelt, wie Daten mit SQL-Abfragen aus einer Datenbank gelesen werden. Das Lesen ist eine der vier grundlegenden Datenbankoperationen des Erzeugens (Create), Lesens (Read), Aktualisierens (Update) und Löschens (Delete), die auch mit dem Akronym CRUD zusammengefasst werden.
Dieses Kapitel konzentriert sich auf die verbleibenden drei Operationen für Datenbanken, Tabellen, Indizes und Views. Darüber hinaus wird im Abschnitt Transaktionsmanagement behandelt, wie mehrere Befehle als eine einzige Einheit ausgeführt werden können.
Datenbanken
Eine Datenbank ist ein Ort zum Ablegen von Daten auf organisierte Art und Weise.
Innerhalb einer Datenbank können Sie Datenbankobjekte ...
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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.