blocks|key|144799|text|你说的是哪种语言/平台？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|144800|在Java界，我更喜欢使用嵌入式数据库，如HSQLDB、H2或JavaDB+(f.k.a.Derby)。|offset|length|144801|它们不需要安装，并且仍然提供了您习惯于从“真正的”DBMS进行的简单访问。|144802|在C/Python/Unixy世界中，SQLite是该领域的热门竞争者。|144803|entityMap|0|LINK|mutability|MUTABLE|url|http://hsqldb.org/|1|http://www.h2database.com/html/main.html|2|http://developers.sun.com/javadb/|3|http://www.sqlite.org/^0|0|L|6|0|S|2|1|V|6|2|0|0|J|6|3|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@]|9|@$D|Z|E|10|1|11]|$D|12|E|13|1|14]|$D|15|E|16|1|17]]|A|$]]|$1|F|3|G|5|6|7|18|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|19|8|@]|9|@$D|1A|E|1B|1|1C]]|A|$]]|$1|J|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]|R|$5|M|N|O|A|$P|S]]|T|$5|M|N|O|A|$P|U]]|V|$5|M|N|O|A|$P|W]]]]

Which language/platform are you talking about?

In the Java world I prefer using embedded databases such as <a href="http://hsqldb.org/" rel="nofollow noreferrer">HSQLDB</a>, <a href="http://www.h2database.com/html/main.html" rel="nofollow noreferrer">H2</a> or <a href="http://developers.sun.com/javadb/" rel="nofollow noreferrer">JavaDB</a> (f.k.a. Derby).

They don't need installing and still provide the simple access you're used to from a "real" DBMS.

In the C/Python/Unixy world <a href="http://www.sqlite.org/" rel="nofollow noreferrer">SQLite</a> is a hot contender in that area.

blocks|key|4208605|text|在Windows上，您可以使用内置的esent数据库引擎。您可以从C%2B%2B使用一个API。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4208606|http://blogs.msdn.com/windowssdk/archive/2008/10/23/esent-extensible-storage-engine-api-in-the-windows-sdk.aspx|offset|length|4208607|还有一个可以从C#代码中使用的托管互操作层：|4208608|http://www.codeplex.com/ManagedEsent|4208609|entityMap|0|LINK|mutability|MUTABLE|url|1^0|0|0|33|0|0|0|0|10|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|J|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|C]]|Q|$5|M|N|O|A|$P|I]]]]

On Windows you can use the built-in esent database engine. There is an API you can use from C++

<a href="http://blogs.msdn.com/windowssdk/archive/2008/10/23/esent-extensible-storage-engine-api-in-the-windows-sdk.aspx" rel="nofollow noreferrer">http://blogs.msdn.com/windowssdk/archive/2008/10/23/esent-extensible-storage-engine-api-in-the-windows-sdk.aspx</a>

There is also a managed interop layer that you can use from C# code:

<a href="http://www.codeplex.com/ManagedEsent" rel="nofollow noreferrer">http://www.codeplex.com/ManagedEsent</a>

blocks|key|3362481|text|另一种选择是各种形式的伯克利数据库(例如，db3、db4、SleepyCat)。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3362482|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Sleepycat_Software^0|T|9|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Another option is the various forms of the Berkeley database (eg, db3, db4, <a href="http://en.wikipedia.org/wiki/Sleepycat_Software" rel="nofollow noreferrer">SleepyCat</a>.)

blocks|key|934615|text|如果您想要在没有服务器安装或麻烦的情况下享受关系数据库带来的痛苦，则可以使用SQLITE。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|934616|我将使用众多文本序列化格式中的一种。我个人认为YAML+1.1是最强大的(内置的对引用对象图的支持)，也是最容易被人类读取/修改的(解析很困难，可以使用诸如PyYAML、JYaml或some+.NET+libaray之类的库)。|934617|另外，XML或JSON是合适的文件格式。|934618|无论使用哪种格式，如果您担心磁盘使用情况，只需压缩文件即可。如果您担心内存中的使用，那么我不认为序列化格式有什么关系...|934619|entityMap|0|LINK|mutability|MUTABLE|url|http://www.sqlite.org/|1|http://www.yaml.org/spec/current.html|2|http://pyyaml.org/wiki/PyYAML|3|http://jyaml.sourceforge.net/|4|https://stackoverflow.com/questions/42071/net-yaml-library^0|12|6|0|0|N|8|1|26|6|2|2D|5|3|2J|H|4|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@$A|10|B|11|1|12]]|C|$]]|$1|D|3|E|5|6|7|13|8|@]|9|@$A|14|B|15|1|16]|$A|17|B|18|1|19]|$A|1A|B|1B|1|1C]|$A|1D|B|1E|1|1F]]|C|$]]|$1|F|3|G|5|6|7|1G|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|1H|8|@]|9|@]|C|$]]|$1|J|3|-4|5|6|7|1I|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|M|N|O|C|$P|S]]|T|$5|M|N|O|C|$P|U]]|V|$5|M|N|O|C|$P|W]]|X|$5|M|N|O|C|$P|Y]]]]

<a href="http://www.sqlite.org/" rel="nofollow noreferrer">SQLITE</a> if you want the pain of a relational DB without a server install or hassle.

I would use one of the many text-serialization formats. I personally think that <a href="http://www.yaml.org/spec/current.html" rel="nofollow noreferrer">YAML 1.1</a> is the most powerful (built-in support for referential object graphs) and easiest to read/modify by a human (parsing is a bear, use a library such as <a href="http://pyyaml.org/wiki/PyYAML" rel="nofollow noreferrer">PyYAML</a> or <a href="http://jyaml.sourceforge.net/" rel="nofollow noreferrer">JYaml</a> or <a href="https://stackoverflow.com/questions/42071/net-yaml-library">some .NET libaray</a>).

Otherwise XML or JSON are adequate file formats.

Whichever format you use, just compress the file if you're concerned about disk usage. If you're worried about in-memory usage, then I don't see how your serialization format matters...

blocks|key|939595|text|看看Prevayler+-它是一个序列化持久化框架(如果你想要人工读取你的数据，可以使用xstream等)，它真的很快，不需要注释，并且“只需工作”。一些基本信息：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|939596|由于它不提供自动回滚，因此它确实强制实施了更严格的事务模式:对于当前的系统状态，它确保事务将成功-例如，将now?|939597|transaction添加到队列并进行存储(对于电源重置，将执行etc)|unordered-list-item|939598|
|939599|transaction并将其应用于对象structure.|939600|
+)是否有意义|939601|​|939602|100,000个transactions/sec的1000个transactions/sec|939603|Reads的|939604|写入|939605|939606|939607|我没怎么用过它，但在小项目中使用它要好得多(持久化任何可序列化的对象都很好)|939608|哦-至于每个人都会问“你在什么平台上运行？”，Prevayler+(java)有很多平台的端口，但我找不到一个像样的列表:(.我记得大约有5-7个，但只记得.NET。|939609|entityMap|0|LINK|mutability|MUTABLE|url|http://www.prevayler.org/^0|2|9|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@$A|1B|B|1C|1|1D]]|C|$]]|$1|D|3|E|5|6|7|1E|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1F|8|@]|9|@]|C|$]]|$1|I|3|J|5|6|7|1G|8|@]|9|@]|C|$]]|$1|K|3|L|5|H|7|1H|8|@]|9|@]|C|$]]|$1|M|3|N|5|6|7|1I|8|@]|9|@]|C|$]]|$1|O|3|P|5|6|7|1J|8|@]|9|@]|C|$]]|$1|Q|3|R|5|6|7|1K|8|@]|9|@]|C|$]]|$1|S|3|T|5|H|7|1L|8|@]|9|@]|C|$]]|$1|U|3|V|5|H|7|1M|8|@]|9|@]|C|$]]|$1|W|3|-4|5|6|7|1N|8|@]|9|@]|C|$]]|$1|X|3|-4|5|6|7|1O|8|@]|9|@]|C|$]]|$1|Y|3|Z|5|6|7|1P|8|@]|9|@]|C|$]]|$1|10|3|11|5|6|7|1Q|8|@]|9|@]|C|$]]|$1|12|3|-4|5|6|7|1R|8|@]|9|@]|C|$]]]|13|$14|$5|15|16|17|C|$18|19]]]]

Have a look at <a href="http://www.prevayler.org" rel="nofollow noreferrer">Prevayler</a> - it's a serialization persistence framework (use xstream etc if you want to human-read your data), which is really fast, does not require annotations and "just works". Some basic info:

<ul>
<li>It does impose a more rigorous transaction pattern, as it does not give you automatic rollback:

<ul>
<li>Ensure transaction will succeed (with current state of system) - e.g. does it make sense now?</li>
<li>[transaction is added to queue], and stored (for power reset etc)</li>
<li>transaction is executed and applied to the object structure.</li>
</ul></li>
<li>Writes of 1000's of transactions/sec</li>
<li>Reads of 100,000's transactions/sec</li>
</ul>

I haven't used it much, but it's sooo much nicer to use for small projects (persisting any serializable object is so nice)

Oh - as for every one saying "what platform you running on?", Prevayler (java) has/had ports to quite a few platforms, but I can't find a decent list :(. I remember that there were around 5-7, but can only remember .NET.

blocks|key|934686|text|如果您计划在程序处理内存时将所有内容存储在内存中，那么使用您编写的基本load()和save()函数将其序列化到文件中是可以的，而且比在DB上使用full函数要少一些痛苦。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|934687|在Java中，这可以使用标准序列化来完成(或者可以在XML之间进行序列化，以使其具有一定的人类可读性和可编辑性)。|934688|它应该不会影响你的内存占用，因为它只是保存和恢复你的对象。你不会得到事务、随机访问、查询和所有这些好东西。|934689|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

If you're planning on storing everything in memory while your program does work on it, then serializing to a file using a basic load() and save() function that you write would be fine, and less pain than a full on DB.

In Java that can be done using standard Serialization (or can serialize to and from XML to make it somewhat human readable and editable). 

It shouldn't affect your memory footprint at all as it is merely saving and restoring your objects. You just won't get transactions and random access and queries and all that good stuff.

blocks|key|939551|text|您甚至可以使用xml、json、.ini文件...甚至是一个文本文件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|939552|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

you could even use xml, json, an .ini file... a text file even

blocks|key|4208569|text|我建议使用类似SQL的数据库(如SQLLite)。今天，您的需求可能会使一个完整的SQL数据库看起来很愚蠢。但你永远不会知道这个“小项目”会随着时间的推移增长多少。当它发展到必须拥有SQL引擎的地步时，您将会庆幸您没有仅仅序列化一些Java对象或以JSON格式存储内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4208570|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I would advise a SQL like database (such as SQLLite). Today your requirements might make a full SQL database seem silly. But you never know how much this "little project" will grow over the years. When it does grow to the point where you have to have a SQL engine, you will be glad you didn't just serialize some Java objects or store stuff in JSON format.

I'm about to write a small utility to organze and tag my mp3s.

What is the best way to store small amounts of data. More importantly, are there databases which exist where I don't need to install a client/server environment, I just include the library and I'm good?

I could use XML, but I'm afraid that the file size would become large and hard to handle, not to mention keeping the memory footprint small.

Thanks

EDIT: I haven't decided on the language, I wanted to make my decision independent of platform. If I had to choose, most likely .NET, second Java, third C++.

My apologies, this is for a Windows App.

Lightweight Store Mechanisms

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正要写一个小工具来组织和标记我的mp3s。存储少量数据的最佳方式是什么？更重要的是，有没有不需要安装客户机/服务器环境的数据库，我只需要包含库就可以了？我可以使用XML，但我担心文件大小会变得很大且难以处理，更不用说保持较小的内存占用了。谢谢编辑:我还没有决定语言，我想让我的决定独立于平台。如果我必须选择，最有可能是.NET，第二个C++，第三个Java。抱歉，这是为Windows应用程序准备的

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