see migration history rails

class CreateProducts < ActiveRecord::Migration[6.0]
  def change
    create_table :products do |t|
      t.string :name
      t.text :description
      t.decimal :price, precision: 8, scale: 2

      t.timestamps
    end
  end
end

Explanation: 1. class CreateProducts < ActiveRecord::Migration[6.0]: This line defines a new migration class named CreateProducts that inherits from ActiveRecord::Migration[6.0], indicating that it is a migration for the Rails version 6.0.

1. def change: This line starts the change method, which contains the changes to be applied to the database.

2. create_table :products do |t|: This line begins the creation of a new database table named products. The block variable t is used to define the table's columns.

3. t.string :name: This line creates a column named name with a data type of string.

4. t.text :description: This line creates a column named description with a data type of text, suitable for storing longer textual data.

5. t.decimal :price, precision: 8, scale: 2: This line creates a decimal column named price with a precision of 8 digits and a scale of 2, suitable for storing a monetary value.

6. t.timestamps: This line automatically adds two timestamp columns, created_at and updated_at, which will be automatically updated by Rails to track when a record is created or updated.

7. end: This line marks the end of the block started with create_table.

8. end: This line marks the end of the change method.

The overall purpose of this migration is to create a products table in the database with columns for name, description, price, created_at, and updated_at. The decimal type for price is suitable for precise monetary values. The timestamps will be managed by Rails for automatic tracking of record creation and updates.