Configure a MySQL master database: create the schema, and run your database initialization scripts.
配置一个MySQL主数据库(master database)：创建schema，然后运行数据库初始化脚本。
When initialization is complete, view the following log files to make sure there were no errors in the database initialization process.
初始化过程完成之后，查看以下日志文件，确认数据库初始化过程中没有出现错误。
If the table doesn't exist, it invokes the database initialization code, ResourcesDatabaseInitializer, which in this example is a utility class that initializes the database.
如果该表不存在，则它调用数据库初始化代码ResourcesDatabaseInitializer，该代码在此示例中是初始化数据库的实用程序类。
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