一个小演示程序,主要是ADO从数据库中的题库获得题目,出题目,判断正误~,想真正用于实际考试,就得考虑控件的动态生成!...

用Ｅｖｃ开发的一些有关数据库连接池的实例代码，供大家参考-Evc development with some of the database connection pool examples of code for reference

公交车查询系统，可以查询一个城市的公交车路线等信息-Bus Inquiry System, you can query a city bus routes and other information

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

锁住数据库中的表 把表达式 True=False 放到表的 ValidationRule 属性就能锁上。 HardLockTable?实现了该功能。声明Public MyDB As DatabaseDim Dummy As Integer函数Function HardLockTable -locked in the database table that expression = False True decentralized form ValidationRule attributes can be locked. HardLockTable realization of the function. Public statements MyDB As DatabaseDim Dummy As Integer Function Function HardLockTable

一个小小的网上水果店，作实验用，连接两个数据库，一个是水果资料，一个是生成的订单号-a small fruit shop online for experimental use, connecting the two databases, is a fruit, is a generation of orders,

直接使用ADO操作ACCESS数据库，对于初学者来说是个不错的例子，类似的也可以操作SQL,ORACLE数据库（不用DSN）-use ADO directly ACCESS database operation for beginners is a good example of a similar operation could SQL, Oracle database (not DSN)

SMExport实现dbgrid的数据导出为excel等多种格式。-SMExport achieve DBGrid data exported to a variety of formats, such as Excel.

Java 数据库连接Beanpackage GeneralJDBC import java.sql.* public class GeneralJDBC{ Connection conn Statement stmt ResultSet rs //构造方法：加载JDBD-ODBC驱动程序 public GeneralJDBC() { Connection conn = null Statement stmt = null ResultSet rs = null try{ Class.forName(-Java database connectivity Beanpackage GeneralJDBC import rows .* GeneralJDBC public class (Connection conn Statement stmt ResultSet rs// Construction : loading JDBD-ODBC Driver public GeneralJDBC () (Connection conn = null Statement stmt = null ResultSet rs = null try (JDBC (

它们主要介绍了在Access中如何使用Sql语句-they are introduced in the use of Access SQL statement

用vc作的利用SQL数据库的物资管理系统-vc used for the use of materials SQL database management system