VC-ODBC.rar_VC++SQL资源-CSDN文库

共1个文件

htm：1个

版权申诉

99 浏览量 2022-09-23 00:10:52 上传评论收藏 46KB RAR 举报

在IT行业中，数据库连接是应用程序开发中的重要环节，尤其是在使用C++进行开发时。本话题主要聚焦于如何在VC++环境中利用ODBC（Open Database Connectivity）接口连接到SQL数据库。ODBC是一个标准的API，允许应用程序通过统一的方式访问各种不同类型的数据库系统。现在，我们深入探讨一下这个主题。让我们理解什么是ODBC。ODBC是微软提出的一个数据访问接口，它为开发者提供了一种独立于特定数据库系统的数据访问方法。通过ODBC，VC++程序可以与多种数据库（如MySQL、SQL Server、Oracle等）交互，只需要编写一次代码，无需关心底层数据库的具体实现。在VC++中使用ODBC，我们需要以下步骤： 1. **设置ODBC数据源**：你需要在Windows的“管理工具”中配置ODBC数据源。在这里，你可以添加新的数据源，选择相应的数据库驱动，并输入数据库连接信息，如服务器地址、数据库名、用户名和密码。 2. **包含必要的头文件**：在VC++项目中，需要包含ODBC相关的头文件，如`sql.h`和`sqlext.h`，这些文件提供了ODBC函数的声明。 3. **初始化环境和连接**：使用ODBC API初始化ODBC环境，然后建立到数据源的连接。这通常涉及`SQLAllocHandle`、`SQLSetEnvAttr`、`SQLAllocConnect`和`SQLConnect`等函数。 4. **执行SQL语句**：连接成功后，你可以使用`SQLExecDirect`或`SQLPrepare`来执行SQL查询、更新、插入或删除操作。例如，你可以创建一个`SQLCHAR*`类型的缓冲区，将SQL语句存储其中，然后调用`SQLExecDirect`执行。 5. **处理结果集**：对于查询语句，需要处理返回的结果集。你可以使用`SQLFetch`函数逐行获取数据，然后通过`SQLGetData`获取列值。 6. **关闭连接和清理**：在完成数据库操作后，记得关闭连接并释放所有分配的资源，如`SQLDisconnect`和`SQLFreeHandle`。在提供的"VC ODBC使用总结_百度文库.htm"文档中，可能详细阐述了上述步骤以及一些实际的示例代码。这份文档可能涵盖了如何创建DSN（数据源名称）、如何在VC++中编写ODBC连接代码，以及如何处理可能出现的错误等内容。通过阅读这份资料，开发者可以更深入地了解如何在实际项目中运用ODBC连接SQL数据库。掌握VC++和ODBC的结合使用对于开发跨平台、数据库无关性的应用程序至关重要。它简化了数据库访问的复杂性，使开发者能够专注于业务逻辑，而不是底层的数据库接口细节。因此，熟悉并熟练使用ODBC是每个VC++开发者的必备技能之一。

资源推荐

资源详情

资源评论

收起资源包目录

VC-ODBC.rar （1个子文件）

VC ODBC使用总结_百度文库.htm 338KB

<!DOCTYPE html>  <html class="screen-max"><head><meta http-equiv="Content-Type" content="text/html; charset=GBK"><style id="reader-render-style">.reader-word-s3-2,.reader-word-s3-14,.reader-word-s3-0{ font-family:'宋体','1efb7afff705cc175527092f0030003','宋体';} .reader-word-s3-0,.reader-word-s3-2,.reader-word-s3-3,.reader-word-s3-6,.reader-word-s3-7,.reader-word-s3-8,.reader-word-s3-9,.reader-word-s3-10,.reader-word-s3-11,.reader-word-s3-12,.reader-word-s3-13,.reader-word-s3-14,.reader-word-s3-15,.reader-word-s3-17,.reader-word-s3-18,.reader-word-s3-20,.reader-word-s3-1{ font-size:144px;} .reader-word-s3-2{ font-weight:600;} .reader-word-s3-2,.reader-word-s3-3{ font-weight:600;} .reader-word-s3-2,.reader-word-s3-3,.reader-word-s3-16,.reader-word-s3-4{ font-weight:600;} .reader-word-s3-0,.reader-word-s3-1,.reader-word-s3-2,.reader-word-s3-3,.reader-word-s3-4,.reader-word-s3-6,.reader-word-s3-7,.reader-word-s3-8,.reader-word-s3-9,.reader-word-s3-10,.reader-word-s3-11,.reader-word-s3-12,.reader-word-s3-13,.reader-word-s3-14,.reader-word-s3-15,.reader-word-s3-16,.reader-word-s3-17,.reader-word-s3-18,.reader-word-s3-19,.reader-word-s3-20,.reader-word-s3-5{ color:#323232;} .reader-word-s3-7,.reader-word-s3-8,.reader-word-s3-11,.reader-word-s3-12,.reader-word-s3-13,.reader-word-s3-15,.reader-word-s3-18,.reader-word-s3-6{ font-family:'Times New Roman','1efb7afff705cc175527092f0040003','Times New Roman';} .reader-word-s3-7{ letter-spacing:-0.18px;} .reader-word-s3-8{ letter-spacing:-0.28px;} .reader-word-s3-13,.reader-word-s3-9{ letter-spacing:0.27px;} .reader-word-s3-10{ font-family:'Verdana','1efb7afff705cc175527092f0010003','Verdana';} .reader-word-s3-11{ letter-spacing:-0.10999999999999999px;} .reader-word-s3-12{ letter-spacing:0.14px;} .reader-word-s3-13{ letter-spacing:0.27px;} .reader-word-s3-14{ letter-spacing:-0.54px;} .reader-word-s3-15{ letter-spacing:0.2px;} .reader-word-s3-16{ font-family:'Times New Roman Bold','1efb7afff705cc175527092f0050003','Times New Roman Bold';} .reader-word-s3-17{ letter-spacing:-0.17px;} .reader-word-s3-18{ letter-spacing:-0.14px;} .reader-word-s3-19{ font-size:160px;} .reader-word-s3-20{ font-family:'Times New Roman','1efb7afff705cc175527092f0080003','Times New Roman';} #pageNo-3 .reader-parent{visibility:visible;}.reader-word-s1-0{ font-family:'Verdana','1efb7afff705cc175527092f0010001','Verdana';} .reader-word-s1-0,.reader-word-s1-4,.reader-word-s1-5,.reader-word-s1-1{ font-size:152px;} .reader-word-s1-0,.reader-word-s1-8,.reader-word-s1-9,.reader-word-s1-11,.reader-word-s1-2{ font-family:'Verdana','1efb7afff705cc175527092f0010001','Verdana';} .reader-word-s1-0,.reader-word-s1-1,.reader-word-s1-2,.reader-word-s1-4,.reader-word-s1-5,.reader-word-s1-6,.reader-word-s1-7,.reader-word-s1-8,.reader-word-s1-9,.reader-word-s1-10,.reader-word-s1-11,.reader-word-s1-12,.reader-word-s1-3{ color:#323232;} .reader-word-s1-4{ font-family:'Verdana Bold','1efb7afff705cc175527092f0020001','Verdana Bold';} .reader-word-s1-4,.reader-word-s1-5{ font-weight:600;} .reader-word-s1-10,.reader-word-s1-6{ font-family:'宋体','1efb7afff705cc175527092f0030001','宋体';} .reader-word-s1-8,.reader-word-s1-9,.reader-word-s1-10,.reader-word-s1-11,.reader-word-s1-12,.reader-word-s1-7{ font-size:144px;} .reader-word-s1-9,.reader-word-s1-11,.reader-word-s1-8{ font-size:144px;} .reader-word-s1-9{ letter-spacing:0.54px;} .reader-word-s1-10{ font-size:144px;} .reader-word-s1-11{ letter-spacing:-0.72px;} .reader-word-s1-12{ letter-spacing:-0.21000000000000002px;} #pageNo-1 .reader-parent{visibility:visible;}.reader-word-s2-1,.reader-word-s2-2,.reader-word-s2-4,.reader-word-s2-6,.reader-word-s2-7,.reader-word-s2-8,.reader-word-s2-9,.reader-word-s2-0{ color:#323232;} .reader-word-s2-2,.reader-word-s2-6,.reader-word-s2-7,.reader-word-s2-8,.reader-word-s2-9,.reader-word-s2-1{ font-family:'Verdana','1efb7afff705cc175527092f0010002','Verdana';} .reader-word-s2-2{ letter-spacing:-0.13px;} .reader-word-s2-1,.reader-word-s2-2,.reader-word-s2-6,.reader-word-s2-7,.reader-word-s2-8,.reader-word-s2-9,.reader-word-s2-3{ font-family:'Verdana','1efb7afff705cc175527092f0010002','Verdana';} .reader-word-s2-4{ font-family:'宋体','1efb7afff705cc175527092f0030002','宋体';} .reader-word-s2-0,.reader-word-s2-1,.reader-word-s2-2,.reader-word-s2-3,.reader-word-s2-4,.reader-word-s2-6,.reader-word-s2-7,.reader-word-s2-8,.reader-word-s2-9,.reader-word-s2-5{ font-size:144px;} .reader-word-s2-6{ letter-spacing:-0.72px;} .reader-word-s2-7{ letter-spacing:-0.19px;} .reader-word-s2-8{ letter-spacing:-0.4px;} .reader-word-s2-9{ letter-spacing:0.67px;} #pageNo-2 .reader-parent{visibility:visible;}.reader-word-s4-1,.reader-word-s4-2,.reader-word-s4-4,.reader-word-s4-5,.reader-word-s4-6,.reader-word-s4-7,.reader-word-s4-9,.reader-word-s4-11,.reader-word-s4-0{ font-size:144px;} .reader-word-s4-1{ letter-spacing:0.14px;} .reader-word-s4-1,.reader-word-s4-11,.reader-word-s4-2{ font-family:'Times New Roman','1efb7afff705cc175527092f0040004','Times New Roman';} .reader-word-s4-0,.reader-word-s4-1,.reader-word-s4-2,.reader-word-s4-4,.reader-word-s4-5,.reader-word-s4-6,.reader-word-s4-7,.reader-word-s4-8,.reader-word-s4-9,.reader-word-s4-10,.reader-word-s4-11,.reader-word-s4-3{ color:#323232;} .reader-word-s4-6,.reader-word-s4-4{ font-family:'宋体','1efb7afff705cc175527092f0030004','宋体';} .reader-word-s4-5{ font-family:'Verdana','1efb7afff705cc175527092f0010004','Verdana';} .reader-word-s4-6{ letter-spacing:-0.12px;} .reader-word-s4-7{ letter-spacing:-0.10999999999999999px;} .reader-word-s4-8{ font-family:'Times New Roman Bold','1efb7afff705cc175527092f0050004','Times New Roman Bold';} .reader-word-s4-9{ font-weight:600;} .reader-word-s4-8,.reader-word-s4-9,.reader-word-s4-10{ font-weight:600;} .reader-word-s4-11{ letter-spacing:0.15px;} #pageNo-4 .reader-parent{visibility:visible;}.reader-word-s5-1,.reader-word-s5-3,.reader-word-s5-4,.reader-word-s5-5,.reader-word-s5-6,.reader-word-s5-8,.reader-word-s5-9,.reader-word-s5-11,.reader-word-s5-12,.reader-word-s5-13,.reader-word-s5-14,.reader-word-s5-0{ font-size:144px;} .reader-word-s5-5,.reader-word-s5-6,.reader-word-s5-12,.reader-word-s5-13,.reader-word-s5-14,.reader-word-s5-1{ font-family:'Times New Roman','1efb7afff705cc175527092f0040005','Times New Roman';} .reader-word-s5-0,.reader-word-s5-1,.reader-word-s5-3,.reader-word-s5-4,.reader-word-s5-5,.reader-word-s5-6,.reader-word-s5-7,.reader-word-s5-8,.reader-word-s5-9,.reader-word-s5-10,.reader-word-s5-11,.reader-word-s5-12,.reader-word-s5-13,.reader-word-s5-14,.reader-word-s5-2{ color:#323232;} .reader-word-s5-3{ font-family:'Verdana','1efb7afff705cc175527092f0010005','Verdana';} .reader-word-s5-11,.reader-word-s5-4{ font-family:'宋体','1efb7afff705cc175527092f0030005','宋体';} .reader-word-s5-5{ letter-spacing:-0.1px;} .reader-word-s5-6{ letter-spacing:0.43999999999999995px;} .reader-word-s5-9,.reader-word-s5-7{ font-family:'Times New Roman Bold','1efb7afff705cc175527092f0050005','Times New Roman Bold';} .reader-word-s5-9,.reader-word-s5-11,.reader-word-s5-8{ font-weight:600;} .reader-word-s5-9{ font-size:144px;} .reader-word-s5-7,.reader-word-s5-8,.reader-word-s5-9,.reader-word-s5-11,.reader-word-s5-10{ font-weight:600;} .reader-word-s5-11{ font-weight:600;} .reader-word-s5-12{ letter-spacing:0.26px;} .reader-word-s5-13{ letter-spacing:0.14px;} .reader-word-s5-14{ letter-spacing:-0.14px;} #pageNo-5 .reader-parent{visibility:visible;}</style><style id="reader-other-style"></style><style id="reader-font-style"></style><meta http-equiv="X-UA-Compatible" content="IE=Edge"><title>VC ODBC使用总结_百度文库</title><script>(function(){window.PDC={_timing:{},_opt:{sample:0.01},_analyzer:{loaded:false,url:"http://static.tieba.baidu.com/tb/pms/wpo.pda.js?v=2.9",callbacks:[]},_render_start:+new Date,extend:function(b,a){for(property in b){a[pr

评论收藏

内容反馈

版权申诉