Entity beans are a bit less mature than JDBC, but still offer a trusted solution for enterprise data persistence.
实体bean比jdbc稍欠成熟，但是它们仍对企业数据持久性提供了可靠的解决方案。
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After reviewing several possible solutions, they decided to use a custom "schema-less" solution on top of MySQL instead of opting for a completely different persistence solution.
Since these carbonates dissolve in acid, the persistence of these mounds indicates that water perhaps less acidic and more favorable for life might have once flowed across Mars.