Using DataGridView to Show Data in a table

Selecting multiple files and show their information on a DataGridView

    public partial class Form1 : Form
    {
        private String[] selectedFiles;
        public Form1()
        {
            InitializeComponent();
        }

Many to Many Mapping

One To Many Mapping

One to One Bi Directional mapping

One To One Mapping

One Class Into 2 Tables

In some cases we have to create 2 tables out of one class. In such cases those tables must must maintain the referential integrity.

New Annotations Used :

• @Table(name="Customer")  : Main table (1st table)
• @SecondaryTable(name="CustomerDetail") : Secondary table
• @Column(table="CustomerDetail") : Mark the fields which are going to maintain in the second table