当MYSQL表类型为myisan时，如何保下数据的有效性？
当MYSQL不支持事务时，PHP程序向数据库中多个表进行操作，如何保证数据的有效性？
因为考虑到不是自己的独立服务器，所以MYSQL表类型是不可控的，这种不可控情况下，请教各位，如何保证多表的数据有效性呢？
像DZ及DEDECMS，肯定也涉及到多表相关性操作了，它们的表类型也是myisan，不知他们是如何解决的。
------解决方案--------------------
对于不支持事务的数据库，你可以根据事务处理的原理自己书写程序代码。没有什么复杂的
对你#3的描述，可以有两种解决方案
1、主表记录删除了就删除了，在附表删除失败时尝试继续删除直至成功
也可以定期检查无主的记录，进行删除操作
2、删除主表记录时先缓存被删除的记录，待附表记录删除成功后再清除
否则重新写入被删除的记录
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