Clarify: no incompatible changes when generating liquibase files (#932)

* Clarify: no incompatible changes when generating liquibase files * Update guides/databases-postgres.md Co-authored-by: René Jeglinsky <[email protected]> --------- Co-authored-by: René Jeglinsky <[email protected]>
cap-js · May 22, 2024 · f4519e3 · f4519e3
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diff --git a/guides/databases-postgres.md b/guides/databases-postgres.md
@@ -532,6 +532,13 @@ If you now start the application, Liquibase executes all change sets, which have
 
 For further schema versions, repeat step ②.
 
+::: info Only compatible changes
+
+A delta DDL script is only produced for changes without potential data loss.
+If the changes in the model could lead to data loss, an error is raised.
+
+:::
+
 ## Migration { .impl .node }
 
 Thanks to CAP's database-agnostic cds.ql API, we're confident that the new PostgreSQL service comes without breaking changes. Nevertheless, please check the instructions in the [SQLite Migration guide](databases-sqlite#migration), with by and large applies also to the new PostgreSQL service.