You will find that as your SOA systems grow and change, you will need to have versioning polices for all contract artifacts: service interfaces, messages and data schemas, policies, etc.
The contract is for the public service of drinking water from Jan. 1, 2011.
这个公共自来水服务合同起始日期为2011年1月1日。
3
You must identify the elements that should be represented in the servicecontractfor your SOA initiative, as different SOA initiatives need different attributes to ensure success.