为什么hibernate创建表在数据库中不可见

Question

如果控制台在运行测试类后显示此内容

07:32:36,883 DEBUG SchemaExport:377 - create table Employee1 (empId integer not null, name varchar(255), primary key (empId))
07:32:37,022  INFO SchemaExport:268 - schema export complete
07:32:37,024  INFO DriverManagerConnectionProvider:170 - cleaning up connection pool: jdbc:derby://localhost:1527/sample;create=true

该表未显示在数据库中

package com.hibernate.chapter1; 

import org.hibernate.cfg.AnnotationConfiguration; 
import org.hibernate.tool.hbm2ddl.SchemaExport; 

public class TestEmployee { 
  public static void main(String[] args) { 
    AnnotationConfiguration config = new AnnotationConfiguration();
    config.addAnnotatedClass(Employee1.class); 
    config.configure("hibernate.cfg.xml"); 
    new SchemaExport(config).create(true, true); 
  } 
}

测试类如下所示：

package com.hibernate.chapter1; 

import org.hibernate.cfg.AnnotationConfiguration; 
import org.hibernate.tool.hbm2ddl.SchemaExport; 

public class TestEmployee { 
    public static void main(String[] args) { 
        AnnotationConfiguration config = new AnnotationConfiguration();
        config.addAnnotatedClass(Employee1.class); 
        config.configure("hibernate.cfg.xml"); 
        new SchemaExport(config).create(true, true); 
    } 
}