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所在平台: Udemy |
课程主页: https://www.udemy.com/course/deep-dive-into-database-programming-using-adodotnet-in-c/
课程评论:没有评论
课程名称:使用ADO .Net深入了解数据库编程 概述:本课程介绍了ActiveX数据对象(ADO)对.NET的支持,它是一种内置于.NET框架的数据访问技术,旨在连接各种数据源,检索和操作数据,并执行读取、更新、插入和删除记录等操作。 关键组件与概念: 1. 数据提供程序:专门的类,作为C#代码与特定数据源(如SQL Server、Oracle、MySQL或XML文件)之间的桥梁。 2. 连接:表示应用程序与数据源之间的通信通道,使您能够发送命令并接收结果。 3. 命令对象:封装要执行的SQL语句或存储过程。 4. 数据读取器:从数据库检索的只前向、只读数据流,适合快速获取和处理数据。 5. 数据适配器:在DataSet与数据源之间的桥梁,用于填充DataSet并将更改反馈到数据库。 6. 数据集:内存中与数据库断开的数据表示,允许离线操作和数据绑定到用户界面元素。 C#中常见任务: - 连接到数据源:指定连接字符串的细节(提供程序名称、服务器、数据库名称、认证凭据)。 - 执行命令:使用命令对象执行SQL查询、存储过程或其他数据库操作。 - 检索数据:使用数据读取器获取数据或填充DataSet以供进一步操作。 - 操作数据:在DataSet中或通过命令直接更新、插入或删除记录。 - 管理事务:通过将操作分组为逻辑单元,确保数据的一致性和完整性。 课程优势: - 统一的数据访问模型:提供跨各种数据源的一致编程模型。 - 断开数据处理:支持离线数据操作,增强可扩展性。 - 强大的性能:优化数据访问和操作的效率。 - 与.NET框架集成:与其他.NET技术无缝集成。 这门课程将帮助您深入理解数据库编程和ADO .Net的应用,为您在C#开发中提供强有力的支持。
(ActiveX Data Objects for.NET) is a data access technology built into the.NET Framework that allows you to connect to various data sources, retrieve and manipulate data, and perform operations like reading, updating, inserting, and deleting records.Key Components and Concepts:Data Providers: Specialized classes that act as bridges between your C# code and specific data sources, such as SQL Server, Oracle, MySQL, or XML files.Connections: Represent a communication channel between your application and the data source, enabling you to send commands and receive results.Command Objects: Encapsulate SQL statements or stored procedures to be executed against the database.Data Readers: Forward-only, read-only streams of data retrieved from a database, efficient for fast retrieval and processing.Data Adapters: Bridge between a DataSet and a data source, used to fill a DataSet with data and reconcile changes back to the database.DataSets: In-memory, disconnected representations of data, allowing for offline manipulation and data binding to UI elements.Common Tasks Using in C#:Connecting to a Data Source:Specifying connection string details (provider name, server, database name, authentication credentials).Executing Commands:Using command objects to perform SQL queries, stored procedures, or other database operations.Retrieving Data:Fetching data using data readers or filling DataSets for further manipulation.Manipulating Data:Updating, inserting, or deleting records within DataSets or directly through commands.Managing Transactions:Ensuring data consistency and integrity by grouping operations into logical units.Benefits of:Unified Data Access Model: Consistent programming model across various data sources.Disconnected Data Handling: Enables offline data manipulation and enhances scalability.Strong Performance: Optimized for efficient data access and manipulation.Integrated with.NET Framework: Seamlessly integrates with other.NET technologies.