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[docs] Add connector features table to help users quickly understand the supported features of each connector

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This closes #1736.
Co-authored-by: rookiegao <rookiegao712@gmail>
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skylines 2 years ago committed by Leonard Xu
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@ -41,6 +41,20 @@ The following table shows the version mapping between Flink<sup>®</sup> CDC Con
2. CDC connectors for DataStream API, users can consume changes on multiple databases and tables in a single job without Debezium and Kafka deployed.
3. CDC connectors for Table/SQL API, users can use SQL DDL to create a CDC source to monitor changes on a single table.
The following table shows the current features of the connector:
| Connector | No-lock Read | Parallel Read | Exactly-once Read | Incremental Snapshot Read |
|----------------------------------------------|---------------------|------------------|-------------------|----------------------------|
| [mongodb-cdc](connectors/mongodb-cdc.md) | ✅ | ✅ | ✅ | ✅ |
| [mysql-cdc](connectors/mysql-cdc.md) | ✅ | ✅ | ✅ | ✅ |
| [oracle-cdc](connectors/oracle-cdc.md) | ✅ | ✅ | ✅ | ✅ |
| [postgres-cdc](connectors/postgres-cdc.md) | ✅ | ✅ | ✅ | ✅ |
| [sqlserver-cdc](connectors/sqlserver-cdc.md) | ✅ | ✅ | ✅ | ✅ |
| [oceanbase-cdc](connectors/oceanbase-cdc.md) | ❌ | ❌ | ❌ | ❌ |
| [tidb-cdc](connectors/tidb-cdc.md) | ✅ | ❌ | ✅ | ❌ |
| [db2-cdc](connectors/db2-cdc.md) | ❌ | ❌ | ✅ | ❌ |
| [vitess-cdc](connectors/vitess-cdc.md) | ✅ | ❌ | ✅ | ❌ |
## Usage for Table/SQL API
We need several steps to setup a Flink cluster with the provided connector.

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