添加新连接之后，所有模式信息都被异步地预取和缓存。

After adding a new connection, all schema information is asynchronously pre-fetched and cached.

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可以通过单击add Connection按钮添加新连接。

You can add a new connection by clicking the add connection button.

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可以添加新连接、测试定义连接的连接状态、更新现有连接的属性或者删除连接，如图11所示(参见大图)。

You can add a new connection, test the connection status of a defined connection, update the properties of an existing connection, or delete a connection, as shown in Figure 11 (see larger image).

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