Nodejs: Database Migration and Seeders with (ORM/ODM)

What is the primary purpose of database migrations

• data backup

• schema version control

• query optimization

• data encryption

Which of these best describes a database schema?

• A database schema is considered the “blueprint” of a database which describes how the data may relate to other tables or other data models.

• A database schema is considered the “content” of a database which describes how the data may relate to other tables or other data models.

• A database schema is considered the “code” of a database which describes how the data may relate to other tables or other data models.

• none of the options

What a seeders used for?

• Planting seed in the gound

• Populating the database with initial data

• creating database indexes

• generating random data for testing

What is the full meaning of ORM?

• Object Relations Map

• Over Relational Mapping

• Object Relational Mapping

• Object Revelation Mapping

When doing migrations, what does "up" in the function stand for?

• Rollback the migration

• Define the structure and changes for the migration

• Seed the database with initial data

• Delete the migration file

Which method/function rolls back a migration?

• up

• down

• rollback

• reverse

What is an advantage of using migrations in database management?

• makes it easier to hide the database schema.

• improves database query performance.

• provide version control for database structure.

• automate data backups.

What is Mongoose primarily used for?

• Relational database management

• Front-end development

• Object-Document Mapping (ODM) for MongoDB

• SQL database management

what is the purpose of a schema?

• execute database queries

• create a new database

• seed the database with initial data

• define the database structure

What is the primary difference between migrations in Sequelize and schema migrations in Mongoose?

• Sequelize migrations are for SQL databases, while Mongoose schema migrations are for MongoDB databases.

• Sequelize migrations use JavaScript, while Mongoose schema migrations use TypeScript.

• Sequelize migrations are for creating new databases, while Mongoose schema migrations are for seeding data.

• There is no difference; they serve the same purpose.