Materializations cards(物化卡片)¶
Back to: Index of cards
Cards in this section support the analysis of Ontology materializations.
Materialization is a data type in Quiver that provides a way to transform, visualize and analyze Ontology data at scale, with the capacity to surpass the 50k row constraint on data joins and transformations present in transform tables.

Specifically, Materializations cards allow you to:
- Perform joins (left/right/inner/full) on objects data
- Derive new columns, filter, or aggregate objects data
- Plot data using categorical charts
- Convert to a transform table and use Vega plots
Use Materializations cards for large-scale analyses that take object sets as inputs, letting Quiver convert object sets seamlessly behind-the-scenes. From an object set, use any of the cards located under the Materializations next actions, or perform an explicit conversion with the Object set materialization card.
To find out which backing dataset primitives are powering a Materializations card, simply hover over the datasource icon.

The following cards are available:
- Expression
- Filter materialization
- Join materializations
- Materialization SQL
- Numeric aggregation (materialization)
- Object set materialization
- Set math (materialization)
- Unique column values (materialization)
- Categorical plot from materialization
中文翻译¶
物化卡片¶
返回:卡片索引
本节中的卡片支持对本体(Ontology)物化(materialization)的分析。
物化(Materialization)是 Quiver 中的一种数据类型,提供了一种大规模转换、可视化和分析本体数据的方式,能够突破转换表中数据连接和转换操作所面临的 5 万行限制。

具体来说,物化卡片允许您执行以下操作:
- 对对象数据执行连接(左连接/右连接/内连接/全连接)
- 派生新列、筛选或聚合对象数据
- 使用分类图表(categorical charts)绘制数据
- 转换为转换表并使用 Vega 图表(Vega plots)
对于需要以对象集作为输入的大规模分析,请使用物化卡片,让 Quiver 在后台无缝转换对象集。从对象集出发,可以使用物化后续操作下的任意卡片,或通过对象集物化卡片执行显式转换。
要了解哪些底层数据集原语(backing dataset primitives)为物化卡片提供支持,只需将鼠标悬停在数据源图标上即可。

以下卡片可供使用:
- 表达式(Expression)
- 筛选物化(Filter materialization)
- 连接物化(Join materializations)
- 物化 SQL(Materialization SQL)
- 数值聚合(物化)(Numeric aggregation (materialization))
- 对象集物化(Object set materialization)
- 集合运算(物化)(Set math (materialization))
- 唯一列值(物化)(Unique column values (materialization))
- 基于物化的分类图表(Categorical plot from materialization)