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https://issues.apache.org/jira/browse/DERBY-5612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13250778#comment-13250778
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Rick Hillegas commented on DERBY-5612:
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Hi Kim,

A database doesn't need to be in a jar file in order to be accessed via the 
classpath, although that is probably common usage. If the classpath contains a 
directory and that directory has a database as a subdirectory, then the 
database can be accessed via the classpath subprotocol. Thanks.
                
> Puzzling documentation about the URL to a database on the classpath
> -------------------------------------------------------------------
>
>                 Key: DERBY-5612
>                 URL: https://issues.apache.org/jira/browse/DERBY-5612
>             Project: Derby
>          Issue Type: Bug
>          Components: Documentation
>    Affects Versions: 10.9.0.0
>            Reporter: Rick Hillegas
>            Assignee: Kim Haase
>
> The "Accessing databases from the classpath" section of the Derby Developer's 
> Guide says that you can access a database on the classpath by putting a 
> forward slash in front of the database name (and then adding other path legs 
> as needed). I don't find that it works this way. I ran the following 
> experiment:
> 1) I put a database called nast in the testRun/extin subdirectory of the 
> current directory.
> 2) Then I put testRun/extin on the classpath.
> 3) Then I tried connecting to the database with various URLs.
> The following URLs could not find the database:
> connect 'jdbc:derby:/nast;user=KIWI;password=KIWI_password';
> connect 'jdbc:derby:nast;user=KIWI;password=KIWI_password';
> connect 'jdbc:derby:classpath:/nast;user=KIWI;password=KIWI_password';
> But the following URL found the database:
> connect 'jdbc:derby:classpath:nast;user=KIWI;password=KIWI_password';
> This is not what I expected from the documentation in the Developer's Guide.

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