VC访问数据库有两种方法：一种是使用CDatabase和CRecord对象；另一种是利用ADO技术。这个程序实现了Postgre数据库的读写，以及存储过程的调用...

用VC+ADO开发数据库的源码，虽然这些源码都不大，但对初学者来说足够了-VC ADO database development source, although the source has not, but is sufficient for the beginners

VB实现交互式组合SQL查询的例子（SELECT　aaa　FROM　bbb WHERE　ccc ORDER BY ddd）-VB portfolio interactive SQL Query example (aaa SELECT FROM WHERE bbb ccc ORDER BY ddd)

INDUCTION MOTOR RUN (Currents and speed as state variables) The motor is running at a specified load. After reaching steady state in an initialization first run, the initial conditions are established for a second run in which the load is pulsating. The dynamic equations are expressed in canonical first-order matrix form adopting currents and speed as state variables, and are solved using ODE45. The user has the choice of selecting one of three common (dq) reference frames: STATOR, ROTOR or SYNCHRONOUS. The torque, speed,and current responses are plotted. -INDUCTION MOTOR RUN (Currents and speed as state variables) The motor is running at a specified load. After reaching steady state in an initialization first run, the initial conditions are established for a second run in which the load is pulsating. The dynamic equations are expressed in canonical first-order matrix form adopting currents and speed

/********************************* * 类名：DBHelper * 功能描述：提供基本数据访问功能 * ******************************/-/********************************** Class name: DBHelper* Function description: to provide basic data access functions*******************************/

电话信息系统，用visual basic+sql实现-telephone information system, using visual basic realization sql

数据备份，可以备份两种数据库的,是一个很可以借见的哟-data backup, backup can be both a database, it is a very see through the yo

 系统登录模块：主要用于用户登录管理。  日常管理模块：主要包括收文管理、发文管理、批示管理、会议管理、公共信息管理、个人办公管理、人事管理7部分。  业务管理模块：主要包括生产报表管理、采购计划管理、库存管理、指标情况管理4部分。 - registry modules: mainly used for user login management.  day-to-day management module: The main text, including land management, documents management, instruction management, meeting management, public information management, personal office management, personnel management 7.  Business Management Module: The main production of statements, including management, planning and managing the procurement, inventory management, management indicators 4.

这是用VS编写的一个源程序代码，学生管理系统，-It is written in a VS source code, student management system,

Hotel Management Systema in VB

图书馆管理系统１１１ 管理员可以进行图书的各项管理工作 用户可以进行查询等简单工作 界面简单　功能较全-library management system administrators can conduct 111 books in various management users can query interface simple tasks such as simple function than the whole