You can use these tools to create simple, composite, and attributed relationship classes. A simple relationship class, which associates features in one feature class with those in another, allows related features to exist independently of each other. The connection between these features is ...
At the start of the relational model Codd said each table must have a primary key and this is special. Later this was relaxed to say each table could have many candidate keys and none were more special than any other. By then, however, the idea of a special primary key was baked into...
Tuning Your Queries Using Composite Attributes PDF Careful implementation of attributes can increase the efficiency of query operations in terms of duration and complexity. SimpleDB indexes attributes individually. In some cases, a query contains predicates on more than one attribute, and the combined ...
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(继承自 OpenXmlCompositeElement) LocalName 获取当前元素的本地名称。 (继承自 OpenXmlElement) MCAttributes 获取或设置标记兼容性属性。 如果未为当前元素定义标记兼容性属性,则返回 null。 (继承自 OpenXmlElement) NamespaceDeclarations 获取在当前元素中定义的所有命名空间声明。 如果没有命名空间声明,...
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First, let’s create the task component and its accompanying story file: src/components/Task.jsx and src/components/Task.stories.jsx. We’ll begin with a baseline implementation of the Task, simply taking in the attributes we know we’ll need and the two actions you can take on a task ...
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(Inherited from OpenXmlCompositeElement) ClearAllAttributes() Clears all of the attributes, including both known attributes and extended attributes. (Inherited from OpenXmlElement) Clone() Creates a duplicate of the current node. (Inherited from OpenXmlElement) CloneNode(Boolean) Creates a dup...