What is a data access class? Data Access Class Instance summary

Using System; Using System.Data; Using System.Data.SqlClient; namespace Sysclasslibrary {//<summary>//DataAccess Summary description. <description> data processing base class, call Mode: Dataaccess.dataset (String) sqlstr), or Dataaccess.dataset (string) sqlstr,ref DataSet DS); </description>///&nbs

1. ASP. NET of data access class code

Introduction: ASP. NET data Access class

2. WinForm Operation Access

Summary: Sometimes doing data transfer, SQL Server and Oracle these large databases are a bit overkill, and will increase maintenance costs, you can use the Access database, especially when dealing with WinForm. Here is a simple way to use Access data access class, which is a static method, if it is a multithreaded program, may cause the database connection

3. Use MB in PHP

Summary: Recently, for Security, a secure insert and security Update method has been added to the data access class. The data filters the dangerous string before inserting and checks the data type and length. The problem comes out, in terms of length checking, the database uses varchar, the length is calculated by the number of characters, such as abcdef 6 characters, 123456 is counted six characters. and

4. High performance JavaScript note data storage and Access performance optimization _javascript tips

Summary: In JavaScript, where the data is stored has an important impact on the overall performance of the code. There are four types of data access: Direct amount, local variable, array item, object member