使用实体框架时锁定记录以进行编辑的最佳实践

Not quite sure how to word this question but here it goes. I am working on a project where multiple client applications are accessing one data source through a WCF service. It may not be relevant but the WCF service is utilizing entity framework to access this data source. Whenever a client has queried a record for editing, I would like to prevent that same record from being edited by the rest of the clients till the first client has completed their update.Not quite sure how to word this question but he