Updating and retrieving data from java servlet to sql database

Caching the meta data will reduce the processing overhead when reusing statements that return small result sets that have many columns but may lead to unexpected errors if the database schema changes after the statement has been prepared. Only applicable to SQL Server (there is no prepare SQL=3 mode for Sybase). If present and the user name and password are provided, j TDS uses Windows (NTLM) authentication instead of the usual SQL Server authentication (i.e.the user and password provided are the domain user and password). You might also want to check Java tutorial, Postgre SQL Java tutorial, Apache Derby tutorial, My SQL tutorial, or Spring Jdbc Template tutorial on Zet Code. In this example, we connect to the database using a data source.

JDBC is part of the Java Standard Edition platform. It is a common practice to put the configuration data outside the program in a separate file. We can change the user, a password or a connection url without needing to recompile the program.

In this article, this application will be referred to as the SQL Gateway application.

If you're working with a database that's hosted by an Internet Service Provider (ISP), the ISP will usually include an HTML-based way to work with the database that's similar to this application.

To keep it simple, but also show several different My SQL data types, I’ve created the following example database table: create table users ( id int unsigned auto_increment not null, first_name varchar(32) not null, last_name varchar(32) not null, date_created timestamp default now(), is_admin boolean, num_points int, primary key (id) ); data type in this table, and I was thinking of those websites where points are awarded for giving correct answers.) I’ve populated this database table in some related articles (Java My SQL INSERT using Statement, Java My SQL INSERT using Prepared Statement), so when I run this SQL SELECT query from the My SQL command prompt: ---- ------------ ----------- --------------------- ---------- ------------ | id | first_name | last_name | date_created | is_admin | num_points | ---- ------------ ----------- --------------------- ---------- ------------ | 2 | Fred | Flinstone | 2010-06-23 | 0 | 6000 | | 3 | Barney | Rubble | 2010-06-23 | 0 | 5000 | ---- ------------ ----------- --------------------- ---------- ------------ 2 rows in set (0.00 sec) I've tried to document the following Java/My SQL SELECT example so you can see these steps.

The first thing we need for our SQL SELECT query example is a sample database table.