D8

利用MFC开发的数据库系统，用的是微软的Access，有详细的链接数据库的代码。(Use of MFC development of database systems, using Microsoft Access, there are more links to the database code.)

Handling null fields in SQL queries

VC进行数据库编程，MFC编写的，可以与CListCtrl控件配合使用(VC database programming, MFC prepared can be used in conjunction with the CListCtrl control)

说明：  此压缩文件包含2002年-2017年200多个地级市资本存量的数据，里面有详细的计算过程与说明。(This document contains the capital stock data of more than 200 cities in 2002-2017, including detailed calculation process and description, which is convenient for scholars to understand and master)

说明：   《员工工资管理系统》是利用Visual Foxpro6.0开发的基于Windows平台的应用软件。它界面漂亮，操作简单、方便，运用它，能使繁琐、复杂的职工（员工）管理变得非常的容易。("staff salary management system" is developed using Visual Foxpro6.0 based Win the Windows platform application software. Its interface beautiful, simple, convenient and use it enables cumbersome, complex workers (staff) management has become very easy.)

A very simple VB Source that can read / write from access database to Grid

利用mfc编程实现acess数据库的存储与访问，对于小型的数据库很实用(Mfc programming using acess database storage and access, the database is very useful for small)

MiniSQL的大致架构在里面了，可以自己填写里面的模块。。(MiniSQL the general framework in which, you can fill out inside the module. .)

是关于培训档案的文档，基于access编写，解除繁琐培训记录的困扰(Is about the training file document, based on access to write to relieve distress tedious training records)

可用于查看和编辑db3，SQLite的免费软件。(look out "db3", free software.)