Data access technology is the key technology for the current distributed system application. This paper discusses the object model of ADO.NET components, the use of several important classes of Oracle.NET and objects such as DataSet, and uses C# language to discuss the access and implementation of Oracle database in enterprise MIS through SQL statements, stored procedures and functions, and gives several suggestions for the application of ADO.NET components. The results show that the enterprise information system developed using this technology has high performance, efficiency and scalability. ADO.NET is a disconnected data access solution provided by Microsoft, which is suitable for web-based distributed software application environments. Compared with traditional ADO technology, the main features are: the application based on the former only connects to the database when retrieving or updating data, and closes the database after completing the transaction, while the latter must maintain a continuous connection to the database; the data obtained by the former is stored in the form of DataSet data sets and transmitted in XML format, while the latter is stored in the form of Recordset recordsets and transmitted between layers and components in binary COM data types. This article combines the application example of the order management module of the ERP sales subsystem applied to the workflow framework to discuss in detail the steps, methods and suggestions for using ADO.NET components to operate SQL, stored procedures and functions in the Oracle database.
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