A system, computer program product and method for implementing and managing a value chain network. The computer program product includes allowing a first company having one or more clusters of retail stores and a second company in a value chain network to access to a shared database, having first and second plurality of fields in the shared database are uniquely associated with each respective first and second company, on a service provider computer over a network; linking the first company with one or more of the second plurality of fields; linking the second company with one or more of the first plurality of fields; periodically receiving sales information and events, including a demand event and a supply event, on the value network within at least one of the one or more clusters of retail stores; and updating one or more of the first plurality of fields that are linked to the second company upon receipt of at least one selected from the group consisting of the sales information, the demand event and the supply event. The first and second company are linked and provided limited access to the one or more of the respective second and first plurality of fields without creating a copy. The one or more updated first plurality of fields are immediately accessible to the first and second company.