title: Quickcast #9: GORM Many-to-One Relationship – Replacing a Collection date: February 8, 2018
description: Sergio Del Amo Caballero explains how to efficiently replace a many-to-one collection with a minimal number of queries and by leveraging cascade behavior. author: Sergio del Amo Caballero image: quickcast.jpg video: https://www.youtube.com/watch?v=7Ypy6osALxY

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Tags: #quickcast

GORM, a powerful Groovy-based data-access toolkit for the JVM, enables simplified creation of many-to-one relationships.

In this short video tutorial, 2GM (Groovy, Grails® framework, and Micronaut) team member, Sergio Del Amo Caballero, explains how to efficiently replace a many-to-one collection with a minimal number of queries and by leveraging cascade behavior.

Grails Quickcasts, brought to you through a partnership between Object Computing, Inc. (OCI) and DZone, provide bite-sized tutorials to help you maximize your productivity with the Framework.