We can’t create one if we already have one with the same name, the same can be seen in the action output. “If not exists” is written because we already have one. Steps to add a table using MySQL workbench:Ĭategory_id int( 11) not null auto_increment, Now, as we are connected to our database, we can start adding our tables to the database using MySQL CLI.Ĭommand: desc users ( to get details of users table)įor this, we first have to open the MySQL workbench which we installed with the MySQL server. S h o w d a t a b a s e s c o n n e c t b o o k s t o r e d b Use the following command to check and connect to our database: 1 Let’s first create our database BookStoreDB using MySQL command-line client. Other ways to check on MySQL server: > sc query mysql80 If your status is stopped you can right-click on MySQL services and start the service. As you can see below, mine is MySQL80, and is up and running. To confirm that, go to Task Manager > Services and find your version of MySQL. You will need the following packages to get started:Īfter we install the above packages, we must make sure that MySQL is running in the system. Using MySQL workbench’s table design feature In this article we will be learning three ways to create the database : Our schema for the articles is BookstoreDB consisting of seven different tables: users, category, book, customer, review, book_order, and order_detail.īelow is the database design table for our book store project. It is developed and distributed by Oracle Corporation. In this article, I will be designing a database using MySQL CLI and our framework will be JavaEE. While designing a database we must visualize the relationships between entities well. Beginners create applications without knowledge of database design, resulting in inflexible, inefficient applications. ResultSet rs = stmt.Creating a database is the most crucial part of your application and, if done right, doesn’t need maintenance. Try(Connection conn = DriverManager.getConnection(DB_URL, USER, PASS) Static final String QUERY = "SELECT id, first, last, age FROM Employees" Static final String DB_URL = "jdbc:mysql://localhost/TUTORIALSPOINT" This sample code has been written based on the environment and database setup done in the previous chapter.Ĭopy and paste the following example in TestApplication.java, compile and run as follows − This sample example can serve as a template when you need to create your own JDBC application in the future. Open a connection: Requires using the DriverManager.getConnection() method to create a Connection object, which represents a physical connection with the database.Įxecute a query: Requires using an object of type Statement for building and submitting an SQL statement to the database.Įxtract data from result set − Requires that you use the appropriate ResultSet.getXXX() method to retrieve the data from the result set.Ĭlean up the environment − Requires explicitly closing all database resources versus relying on the JVM's garbage collection. Most often, using import java.sql.* will suffice. Import the packages: Requires that you include the packages containing the JDBC classes needed for database programming. There are following six steps involved in building a JDBC application − This will show you how to open a database connection, execute a SQL query, and display the results.Īll the steps mentioned in this template example, would be explained in subsequent chapters of this tutorial. This chapter provides an example of how to create a simple java based application to access MySQL database.
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