从这个图中可以看出，数据库和模式是从SQL对象派生而来的，因此具有属性，例如名称、描述和标签。
From this figure, you can see that databases and schemas are derived from the SQL object, and therefore they have properties, such as name, description, and label.
在预编译和绑定时，代码页派生于用于预编译语句和SQLCA中返回的所有字符数据的数据库连接。
At precompile and bind time, the code page derived at the database connection is used for precompiled statements, and any character data returned in the SQLCA.
由于ESQL是SQL派生的，所以，在需要许多数据库交互时，操作消息数据特别好。
Since ESQL is derived from SQL, it is particularly good for manipulating message data when a lot of database interaction is expected.
在这个例子中，还可以使用适当的数据库名，在称为dbName 的派生业务对象类中声明私有String属性。
In this example, a private String attribute can also be declared in derived business object classes, called dbName, with the name of the appropriate database.
升级Library数据库之后，要创建对应着4种派生形式的文档类型。
After updating the Library database, we create document types that correspond to each of the four subforms.
在您的具体实现中，该字段可以被存储为PortalServer按用户喜好使用的关系数据库表的一部分，也可以从某种逻辑派生出来。
In your actual implementation, this field can be stored as part of the relational database table used by Portal Server for the user's preferences or it can be derived from some kind of logic.
在这个示例中，只用到了一个数据库，但在多数据库解决方案中，派生的业务对象类可以覆盖该方法，返回其适当的主要Notes数据库实例。
In this sample, only one database is used, but in a multiple database solution, the derived business object classes can override this method, returning their appropriate home Notes database instance.
关系代数的派生算子在关系数据库查询语言中得到了广泛应用。
The derived relational algebra operators are widely used in the relational database query languages.
在单表继承中，一个数据库表同时包含基类和派生类的列。
In single-table inheritance, there is a single database table that contains columns for both base and derived classes.
介绍如何从现有数据库派生概念模型。
Describes how to derive a conceptual model from an existing database.
为了完成此过程，假定将绑定到派生自数据库的数据源。
To complete the procedure, it is assumed that you will bind to a data source derived from a database.
为了完成此过程，假定将绑定到派生自数据库的数据源。
To complete the procedure, it is assumed that you will bind to a data source derived from a database.
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