Shared data management in software-as-a-service platform may provide a common object data schema for one or more data objects and one or more data attributes associated with said one or more data objects stored in a master database. A plurality of applications may be enabled to be deployed dynamically on a platform and interoperate by sharing said data values stored in the master database. Data trading is enabled in which applications request permissions to read from or write to, or both, the master database, and in which the requests are mediated by granting or denying permissions.