anchor.diff:  consumes:
   - name: database_conn
     type: conn
  +# ...
   ```
   
   Then, in the application job's templates, it can use the connection information from the link:
  
positive.code:   - username
    - password
    - name
  properties:
  - name: port
  # ...
  ```
  
  
negative.code: 
  ---
  ## <a id="overview"></a> Overview
  
  First, we provide an overview of the capabilities and logistics of links through a simple example. Here, we have two jobs: an application job and a database job. The database provides its connection information through a link, which the application consumes.
  
  In the database job's spec file, it declares that it provides the connection information:
  