Quelle  layer.xml

<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE filesystem PUBLIC "-//NetBeans//DTD Filesystem 1.1//EN" "http://www.netbeans.org/dtds/filesystem-1_1.dtd">
<filesystem>
    <folder name="Databases">
        <folder name="Explorer">
            <folder name="Root">
                <folder name="NodeProviders">
                    <file name="DerbyNodeProviderFactory.instance">
                        <attr name="instanceCreate" methodvalue="org.netbeans.modules.derby.DerbyNodeProvider.getFactory"/>
                        <attr name="instanceOf" stringvalue="org.netbeans.api.db.explorer.node.NodeProviderFactory"/>
                        <attr name="position" intvalue="90"/>
                    </file>
                </folder>
            </folder>
        </folder>
        <folder name="Runtimes">
            <file name="DerbyRuntime.instance">
                <attr name="instanceCreate" methodvalue="org.netbeans.modules.derby.RegisterDerby.getDefault"/>
                <attr name="instanceOf" stringvalue="org.netbeans.spi.db.explorer.DatabaseRuntime"/>
            </file>
            <file name="DerbyRuntimeModular.instance">
                <attr name="instanceCreate" methodvalue="org.netbeans.modules.derby.RegisterDerby.getModular"/>
                <attr name="instanceOf" stringvalue="org.netbeans.spi.db.explorer.DatabaseRuntime"/>
            </file>
        </folder>
    </folder>
</filesystem>