Is it advisable to change data in a database table after it has been initially stored, or should it be stored in the required format from the beginning?

It is generally advisable to store data in the required format from the beginning to avoid potential issues with data integrity and performance. However, if changes need to be made to existing data in a database table, it is important to carefully plan and execute the updates to ensure consistency and accuracy. 

// Example PHP code snippet to update data in a database table
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

// SQL query to update data in the table
$sql = "UPDATE myTable SET column1 = 'new_value' WHERE id = 1";

if ($conn->query($sql) === TRUE) {
  echo "Record updated successfully";
} else {
  echo "Error updating record: " . $conn->error;
}

$conn->close();
?>

Keywords

database table data format data manipulation PHP functions data storage

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