每个数据都有一个独特的键。
A unique key can be generated using ftok .
我们可以使用ftok生成一个惟一的键值。
That is it only brings in one row of data for a unique key combination.
即它在一个唯一键组合上只会产生一行数据。
Each object stored within an S3 bucket is identified using a unique key.
在S3bucket中存储的每个对象由一个惟一的键标识。
There is no guarantee that the RPG program is using a unique key on the CHAIN.
无法保证RPG程序正在 CHAIN 上使用一个唯一键。
As soon as you have a unique key, check to see if there is an item in the cache.
一旦您有了一个唯一的密钥，请检查一下看看在高速缓存中是否有这个项。
Each extension should use a unique key to use to store state in the dictionary.
每个扩展需要一个唯一键用于在字典中保存状态。
A certificate is a file that contains a unique key and the identity of the solution publisher.
证书是一个文件，其中包含解决方案发布者的唯一密钥和标识。
To cache a response from a web service, you need to generate a unique key to use for indexing it.
为了高速缓存一个来自Web服务的响应，您需要生成一个用来对它进行索引的唯一的密钥。
The ODBC Access property "Generate unique keys in index" provides a unique key for database interactivity.
ODBCAccess属性 "Generateunique keys inindex"为数据库交互性提供唯一键。
Begins by indexing it and encrypting it with a symmetric encryption scheme (e.g., AES) under a unique key.
首先为其建立索引，并使用对称的加密模式(例如aes)以唯一的密钥对其进行加密。
When creating a game, each difficulty button is now bound to a unique key: Normal 'r', Nightmare 'n', and Hell 'h'.
当创建一个游戏，每个困难按钮现在绑定到一个唯一的密钥：正常'R '等，恶梦'N '和地狱的H。
Data stored in Distributed Map can be accessed by handing over a unique key for the data object, also called the cache key.
通过移交数据对象的唯一密钥(也称为缓存密钥)，可以访问存储在分布式映射缓存中的数据。
Key-values Stores. The main idea here is using a hash table where there is a unique key and a pointer to a particular item of data.
KV存储的主要思想是一个哈希表，每个item有一个主键和特定的数据值。
Synsets, stored in a database and identified by a unique key in the form annnnnnnn, are groups of words that refer to the same thing.
存储于一个数据库中并通过一个annnnnnnn形式的惟一键识别，是指含义相同的多个单词的组合。
Errors that are raised during the EXECUTE or FETCH phase of execution, such as a unique key constraint violation, can be returned in more than one way.
对于在执行期间的EXECUTE或FETCH阶段产生的错误，比如unique keyconstraint违背，可以以多种方式返回。
Each element has a title, the main text, a date, and a unique key field called guid (for globally unique id), which is assigned when the item is created.
各元素都有标题、正文、日期和一个名为guid (“globally uniqueid”的缩写，表示全局惟一id)的惟一键字段，这个字段是在创建项目时指派的。
A dictionary in Objective-C is an object that holds two sets of information, a unique key and associated values, and enables you to use the key to retrieve items.
Objective - c中的字典是一个具有两组信息(惟一的密钥和相关的值)的对象，且使您能够使用该密钥来检索条目。
The aggregation part of the Planet RDF code is relatively simple: it regularly polls each RSS feed in the list, derives a unique key for an RSS item, and stores changes to each item.
PlanetRDF聚集部分的代码相对比较简单，依次注册清单中的每一个rss提要，获取每个RSS条目的键值，并保存所有条目的变化。
This was because saving new entities required generating a new and unique key by the registry itself.
这是由于保存新实体要求由注册中心本身生成一个新的、唯一的键。
The hash code is an integer that should return a unique number of each unique key.
散列码是一个整数，应该对每个键返回唯一的数字。
Each widget must be assigned a unique name or key used by SLIK to identify a specific widget.
每个控件必须分配一个唯一的名字或者键，SLIK用它来识别具体的控件。
The EJB specification states that the key must be a unique value represented by a serializable object.
EJB规范规定：主键必须是一个可序列化的对象所表示的独一无二的值。
A UUID key is guaranteed to be unique and never changes within a UDDI registry.
uuid键必须是唯一的，并且在一个UDDI注册中心中从来都不会变化。
Correlation predicates typically compare some key value in the event, such as a unique trip identifier, with a metric containing the same key.
关联谓词通常将事件中的某个键值(例如唯一旅行标识符)与包含相同键的度量作比较。
In this case, each KPI has a unique identifier, which can be used as a key to access the history data.
在这种情况下，每个KPI都具有唯一的标识符，可以作为访问历史记录数据的键使用。
Also, before setting up replication in DB2, you will want to ensure that every database table has a primary key or unique index.
此外，在DB 2中创建复制之前，您会希望保证每一个数据库表都具有一个主键或惟一索引。
Use it to create a unique scope key for this application scope.
使用它为应用程序范围创建惟一的范围键。
If the MQT happens to have a key, unique indexes should be created to reflect the fact.
如果MQT具有一个键，那么应该创建惟一的索引以反映这一事实。
If the MQT happens to have a key, unique indexes should be created to reflect the fact.
如果MQT具有一个键，那么应该创建惟一的索引以反映这一事实。
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