How do I represent Policies_Coverages table in Java and it's relationships? | Together Java | Page 1

lucid shuttle Jul 12, 2023, 5:52 PM

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I am creating the classes for the tables seen in the image and also defining their relationships? but how would I define policies_coverages table without it have it's own primary key? I am using JPA.

C1547ModelDefinitionandImplementation_Resources_Images_ER-DIAGRAM.drawio_V6.png

sweet sleetBOT Jul 12, 2023, 5:52 PM

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<@&1004656351647117403> please have a look, thanks.

sweet sleetBOT Jul 12, 2023, 5:52 PM

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sweet sleet <@&1004656351647117403> please have a look, thanks.

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lime merlin Jul 12, 2023, 10:14 PM

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Thinks that helps : https://stackabuse.com/a-guide-to-jpa-with-hibernate-relationship-mapping/

Stack Abuse

Guide to JPA with Hibernate - Relationship Mapping

In this tutorial, we'll dive into Relationship Mapping with JPA and Hibernate in Java, with examples of Many-to-Many, One-to-Many, Many-to-One and One-to-One annotations.

undone quartz Jul 13, 2023, 12:50 AM

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As for the policies_coverages table, check out composite primary keys.
https://www.baeldung.com/jpa-composite-primary-keys

Baeldung

Composite Primary Keys in JPA | Baeldung

Learn how to configure a JPA entity for more than one primary key column, diving into the tradeoffs between @EmbeddedId and @IdClass.

#How do I represent Policies_Coverages table in Java and it's relationships?