当底层数据改变时，可以重新生成它。
When the underlying data changed, it could simply be regenerated.
一种补充方法是，当底层数据改变时，让缓存的数据项失效。
A complementary method is to invalidate the cached entry when the underlying data changes.
无论什么时候模型数据改变，模型所确定的视图也依赖它。
Whenever the model's data changes, remodel notifies views that depend on it.
我是汉斯·罗斯林的超级粉丝，还总对自己说：让我的数据改变我的心智吧！
I'm a big fan of Hans Rosling, and I always whisper to myself: let my dataset change your mindset.
最可靠但也最昂贵的方法是每次数据改变时复制它(如每次servlet调用结束)。
The most reliable, but also most expensive, approach would be to replicate the data every time it changes (such as at the end of each servlet invocation).
但是，由于数据改变的足够快以至于在日志被截断以前而用尽了日志的空间，这种情况也是可能发生的。
But it is also possible that the data changes are fast enough to use up the log space before the log is truncated.
所以我们常常需要随实际数据改变我们的分析表示法，从而使我们能分辨出数据流中特定部分更多的细节。
Often, we need to be able to change our analytical representation depending on the actual data, so that we can resolve more detail in specific parts of the data stream.
分析了三维地形动态建模的表现方法及特点，并将地形动态建模研究的重点放在基于空间数据改变的动态地形建模上。
Analyzing the performance method of 3d terrain dynamic modeling and it's characters, and set the point to the terrain dynamic modeling based on the change of space data.
在这种模式下，服务器允许您定义一个数据改变阈值，并且只有在数据自最近一次建立后的变化超过了阈值才会刷新统计数据。
In this mode, the server allows you to define a data change threshold and refresh statistics only if the data has changed beyond the threshold since they were last built.
最新公布的数据表明，孩子们对科技的使用有所增加，有些人担心这正在改变儿童的天性。
Newly released data point to an increase in technology use among children which some worry is changing the very nature of children.
然而，根据美国疾病控制与预防中心的数据，人的平均身高（男性五英尺九英寸、女性五英尺四英寸）从1960年以来就没有改变过。
Yet according to the Centers for Disease Control an Prevention, Average height—5'9" for men, 5'4"for women—hasn't really changed since 1960.
然而，根据美国疾病控制和预防中心的数据，男性的平均身高（5英尺9英寸）、女性的平均身高（5英尺4英寸）自1960年以来并没有真正改变。
Yet according to the Centers for Disease Control and Prevention, average height-5'9'' for men, 5'4'' for women-hasn't really changed since 1960.
存储单个配置项目很有用，但大多数数据随时间改变，特别是当您谈论能源用途时。
Storing a single profile item is useful, but most data changes over time, particularly when you talk about energy usage.
可以利用表达式构建器改变和操纵数据值。
Using the Expression Builder, data values can be altered and manipulated.
而且，和上文提到的相同，你也可以通过视图选项改变数据的呈现方式。
Also, you have the view option to change the appearance of your data which I mentioned earlier in this post.
注意：在执行每个步骤之后，可以检查数据是否按照预期改变了。
Note: After each step you can check to see if the data has been changed as expected.
你现在可以像我们前面所做一样，随意地更新任何数据值或者改变测试用例。
You're now free to update any data values or change the nature of the test case as we did previously.
基于矢量的数据格式的出现改变了GIS专家的生活。
Life changes for the GIS specialist when vector-based data formats appear.
如何为管理方面所提出的新的请求以为雇员数据所有的改变建立日志？
What if management issued a new requirement that you create a log of all changes to an employee's data?
随着时间的推移，因数据的改变，旧的分区键有可能会不如之前那么好。
It is also possible that over time, as your data changes, old partitioning keys become less optimal than they were previously.
任何这些参数的变化都只会影响数据服务的代码，不会要求每个消费者改变其数据访问逻辑。
The change to any of these parameters will only impact the data service code and will not force every single consumer to change their data access logic.
如果数据类型相同，改变默认值对查询公式没有影响，但是影响这些值的查询结果。
Changing the default value does not affect the query formulation if the data type is the same, but it affects the results for queries on those values.
首先，这些统计数据每天只改变一次，而且对每个用户都是一样的。
First, these stats are only going to change once a day and they're the same for every user.
根据表中数据发生改变的速度，调整RUNSTATS的频率。
Adjust the frequency of RUNSTATS depending on how fast data is changing in a table.
语言扩展或版本控制，相反，状态不改变，而是数据的展现被更改。
Language extension or versioning, on the other hand, the state is unchanged, but the way that data is represented has changed.
这样，对快速改变的数据的改变也不会迫使容器去序列化并传播慢速改变的数据。
That way, changes to faster-changing data will not force the container to serialize and propagate the slower-changing data as well.
事实上，如果正确操作，所有数据绑定都保证数据不会改变。
In fact, all that data binding usually does, if operating correctly, is ensure that the data doesn't change.
关联隐私元数据应该是一次只能关联一个连接，除非物理数据模型改变。
Associating the privacy metadata should be a one-time-per-connection activity, unless the physical data model changes.
我们还探讨了如何利用一个用户缓存(以apc为例)来展示如何在数据不经常改变时避免重复的数据库调用。
We also took a look at leveraging a user cache (using APC as an example) to show how you can avoid repeated database calls when the data doesn't change very often.
所以，在同样的数据结构中，可以改变表示数据的方式，甚至可以以不同方式表示同一事物。
So you can change how you represent things, or even represent the same thing in different ways, all within the same data structure.
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