The Enterprise Services Repository and Registry is an integral part of SAP NetWeaver SOA infrastructure and serves as the central repository in which service interfaces and enterprise services are modeled and their metadata is stored.
It consists of:
Enterprise Services Repository (ES Repository) – the metadata repository of all service objects for enterprise SOA.
Enterprise Services Repository provides an integrated toolset and repository for the governed definition of SOA assets (such as service interfaces and process component models). It thus provides transparency for designers and developers of solutions on top of platform applications into the business semantics exposed by enterprise services. It is open to manage non-SAP services (provided by customers and ISVs) in a customer landscape and thus serves as the single source of truth of a company’s SOA-enabled IT landscape.
A UDDI v.3-compliant Services Registry – The Services Registry (SR) is a registry for Web services that is located centrally within an SOA landscape. The Services Registry contains information about services provided in that landscape, with references to the WSDL metadata relevant for those services and to the locations of the callable service endpoints.
When using services, we distinguish between the service provider and the service consumer. In the simplest case, we can assume that the service provider – the person who provides the services – knows the service consumer and informs the latter where the services can be found. However, this contradicts the idea of a global service platform. What makes using Web services so attractive is the idea that applications can be built from the services that available in a central registry, in this case the Services Registry.
The ES Repository and Registry support widely-adopted open standards, including Web Services and UDDI. The ES Repository supports SAP-defined Global Data types based on the Core Component Technical Specification standards.
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