Step 4: Create a Schema
You can create a schema in two ways: on the Instances page or on the Schemas page. This section uses the DDM instance page as an example to describe how to create a schema.
Figure 1 Instances page
Figure 2 Schemas page
Procedure
- Log in to the DDM console, and in the navigation pane, choose Instances. In the instance list, locate the required DDM instance and click Create Schema in the Operation column.
- On the displayed page, specify a sharding mode, enter a schema name, select the number of shards per DB instance, and click Next: Select DB Instance. Figure 3 Creating a schema
Sharding mode:- Sharded: One schema corresponds to multiple DB instances.
- Unsharded: One schema corresponds only to one DB instance, and only one database shard is created for that instance.
The schema name contains 2 to 24 characters and must start with a letter. Only letters, digits, and underscores (_) are allowed.
The shards per DB instance ranges from 1 to 64.
- On the RDS DB Instances tab page, select the required RDS DB instances. You can choose to configure the instances as the unsharded table storage nodes. Click Preview.
- On the displayed page, enter the administrator password and click Finish.
Last Article: Step 3: Buy a DDM Instance
Next Article: Step 5: Create a DDM Account
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