第一列(ID)是此表的主键。

The first column (ID) is the primary key of the table.

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主键、引用完整性和检查约束。

Primary key, referential integrity, and check constraints.

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Entity类需要一个主键。

An Entity class needs a primary key.

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标识Catalog的主键。

The primary key identifying the catalog

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另一个主要增强是支持生成主键。

Another major enhancement is the support for generating primary keys.

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可以将该代理列指定为主键列。

This surrogate column can be designated the primary key column.

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输出为9：匹配的单行的正确主键。

The output is 9: the correct primary key of the sole row that matches.

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还将ID列标识为表的主键。

You've also identified the id column as the table's primary key.

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自动生成主键和未知的主键。

Automatic primary key and unknown primary key generation.

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每个表有一个用作主键的id字段。

Each table has an id field that serves as the primary key.

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确保每个表都有一个主键。

Make sure each table has a primary key.

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允许您定义表的主键、惟一键和外键。

The keys view allows you to define primary, unique, and foreign keys for the table.

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这成为物理模型中的主键。

This becomes the primary key in the physical model.

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这类似于数据库中选择一列作为主键。

This is analogous to making a column in a database a primary key.

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另外一种创建主键和外键的方式。

Alternative way of creating a primary key and foreign key.

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ID被设置为自动增量并作为主键。

The ID is set to auto-increment and is used as the primary key.

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数据库结构更改，从主键删除了搜索路径。

Database structure change to remove search path from primary keys.

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行键是表的主键，通常是一个字符串。

The row key is the primary key of the table and is typically a string.

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在这个范例中，EPR中没有可用的主键。

In this case, there is no primary key available in the EPR.

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注意这个表有两个主键。

Note that this table has two primary keys.

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目标表必须有一个主键。

The target table must have a primary key.

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该键类包含bean的唯一主键实现。

The key class contains the unique primary key implementation for the bean.

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当定义bean 时，同时也定义主键。

You define the primary key when you define the bean.

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这表示将为名为id的主键属性创建关系。

This indicates that the relationship will be created for a primary key property named: id.

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步骤5：向表添加主键。

Step 5: Adding a primary key to a table.

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客户id列(作为主键)。

Customer ID column (as primary key).

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首先创建维度的主键到伪事实键的连接。

Initially create a join from the dimension's primary key, to the fake fact key.

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一个项目的主键或惟一标识符是项目的名称。

The key or unique identifier for an item is the item's name.

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还可以为具有组合键的实体创建一个主键类。

You can also create a primary key class for entities that have composite keys.

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还可以为具有组合键的实体创建一个主键类。

You can also create a primary key class for entities that have composite keys.

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