The SAP product line includes servers and tools for building servers:

• SAP Adaptive Server Enterprise is a database server. SAP Adaptive Server Enterprises manage information stored in one or more databases.

• SAP Open Server provides the tools and interfaces needed to create a custom server application.

  An SAP Open Server application can be any type of server. For example, it can perform specialized calculations, provide access to real-time data or interface with services such as electronic mail. An SAP Open Server application is created individually, using the building blocks provided by SAP Open Server Server-Library.

SAP Adaptive Server Enterprise and SAP Open Server applications are similar in some ways:

• Both servers respond to client requests.

• Clients communicate with both SAP Adaptive Server Enterprise and SAP Open Server applications through Open Client products.

But they also differ:

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• An application programmer must create an SAP Open Server application, using Server-Library’s building blocks and supplying custom code. SAP ASE is complete and does not require custom code.

• An SAP Open Server application can be any kind of server and can be written to understand any language. SAP Adaptive Server Enterprise is a database server and understands only Transact-SQL.

• An SAP Open Server application can communicate with non-SAP protocols, as well as with SAP applications and servers. SAP ASE can communicate directly only with SAP applications and servers; however, SAP ASE can communicate with non-SAP applications and servers by using an SAP Open Server gateway application as an intermediary.