what is a rails migration? Write up a short example of a simple rails migration with a table called customers, a string column called name, and a text column called description?
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Answer / Shailja Singh
Rail Migration in Ruby on Rails is a way to manage database schema changes. A migration file defines the structure of a database table, including its columns and their data types. Here's an example of a simple Rails migration:nn```rubynrails generate migration CreateCustomers name:string description:textn```nThis command creates a new migration file called `create_customers.rb` in the `db/migrate` directory.nn```rubynclass CreateCustomers < ActiveRecord::Migration[6.1]
def change
create_table :customers do |t|
t.string :name
t.text :description
t.timestamps
end
endn```nThis migration defines a `Customers` table with two columns: `name` and `description`. The `t.timestamps` command adds created_at and updated_at timestamps by default.
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