使用E4A（Easy4Android）開發Android應用將數據存儲到數據庫中，通常采用MySQL數據庫。下面介紹E4A如何與MySQL數據庫進行連接。

' 導入相應的類庫
import java.sql.Connection
import java.sql.DriverManager
import java.sql.ResultSet
import java.sql.Statement
' 定義連接信息
dim serverip as string = "192.168.1.2"
dim username as string = "root"
dim password as string = "123456"
dim dbname as string = "test"
Dim connectionString As String = "jdbc:mysql://" & serverip & "/" & dbname & "?user=" & username & "&password=" & password & "&useUnicode=true&characterEncoding=UTF8"
' 建立連接
Dim conn As Connection = DriverManager.getConnection(connectionString)
' 執行SQL語句
Dim statement As Statement = conn.createStatement
Dim sql As String = "select * from student"
Dim rs As ResultSet = statement.executeQuery(sql)
' 處理結果集
While rs.next
Dim id As Int = rs.getInt("id")
Dim name As String = rs.getString("name")
Dim age As Int = rs.getInt("age")
' 其他操作...
End While
' 關閉連接
rs.Close
statement.Close
conn.Close

以上代碼中，我們使用了Java提供的JDBC（Java Database Connectivity）進行連接MySQL數據庫，并執行相應的SQL語句，最后關閉連接。其中，需要填寫正確的連接信息，包括MySQL數據庫的IP地址、用戶名、密碼和數據庫名稱。