若一个关系R满足_______、_______和对称性，则关系R是等价关系．

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问题若一个关系R满足_______、_______和对称性，则关系R是等价关系．

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消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.

文件: /twcms/kongphp/cache/cache_redis.class.php

位置: 第 85 行

<?php echo 'KongPHP, Road to Jane.'; ?>

若一个关系R满足_、_和对称性，则关系R是等价关系．

相关内容：关系,称性,等价

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