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H2: Set collation #1502

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H2: Set collation #1502

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H2: Set collation
MattSchur Dec 6, 2024
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Update persistence-services.md
MattSchur Dec 6, 2024
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Update java/cqn-services/persistence-services.md
smahati Dec 11, 2024
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Update java/cqn-services/persistence-services.md
smahati Dec 11, 2024
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4 changes: 2 additions & 2 deletions java/cqn-services/persistence-services.md
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Expand Up @@ -55,9 +55,9 @@ CAP Java SDK is tested on [PostgreSQL](https://www.postgresql.org/) 15 and suppo

### H2 Database

[H2](https://www.h2database.com/html/main.html) is one of the recommended in-memory databases for local development. There's no production support for H2 from CAP and there are the following support limitations:
[H2](https://www.h2database.com/html/main.html) is the recommended in-memory database for local development and testing with CAP Java. There's no production support for H2 from CAP and there are the following limitations:

1. H2 only supports database level collation. Lexicographical sorting on character-based columns isn't supported.
1. H2 only supports database-level collation and the default sort order is by ASCII-code. You can set a [collation](https://www.h2database.com/html/commands.html#set_collation) to sort using dictionary order instead.
2. Case-insensitive comparison isn't yet supported.
3. By default, views aren't updatable on H2. However, the CAP Java SDK supports some views to be updatable as described [here](../working-with-cql/query-execution#updatable-views).
4. Although referential and foreign key constraints are supported, H2 [doesn't support deferred checking](https://www.h2database.com/html/grammar.html#referential_action). As a consequence, schema SQL is never generated with referential constraints.
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