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doc: add data model diagram in concept page

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gccgdb1234 2022-08-25 12:59:02 +08:00
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docs/en/04-concept/index.md
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@ -158,7 +158,7 @@ Queries can be executed on both a table (subtable) and a STable. For a query on
In TDengine, it is recommended to use a subtable instead of a regular table for a DCP. In the meters example, we can create subtables like d1001, d1002, d1003, and d1004 under super table meters. In TDengine, it is recommended to use a subtable instead of a regular table for a DCP. In the meters example, we can create subtables like d1001, d1002, d1003, and d1004 under super table meters.
To better understand the data model using super table and subtable, please refer to [Meters Data Model Diagram](supertable.webp) To better understand the data model using super table and subtable, please refer to ![Meters Data Model Diagram](./supertable.webp)
## Database ## Database

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docs/zh/04-concept/index.md
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@ -159,7 +159,7 @@ TDengine 建议用数据采集点的名字（如上表中的 D1001）来做表
TDengine系统建议给一个数据采集点建表，需要通过超级表建表，而不是建普通表。在智能电表的示例中，我们可以通过超级表meters创建子表d1001, d1002, d1003, d1004等。 TDengine系统建议给一个数据采集点建表，需要通过超级表建表，而不是建普通表。在智能电表的示例中，我们可以通过超级表meters创建子表d1001, d1002, d1003, d1004等。
为了更好地理解超级与子表的关系，可以参考 [智能电表数据模型示意图](supertable.webp) 为了更好地理解超级与子表的关系，可以参考 ![智能电表数据模型示意图](./supertable.webp)
## 库 (database) ## 库 (database)