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Junior — Middle

Have you used transactions when working with ORM to ensure data integrity?

sobes.tech AI

Answer from AI

Yes, when working with ORM (for example, Sequelize in Node.js), using transactions is a standard practice to ensure data integrity. Transactions allow grouping multiple database operations into a single atomic unit: either all operations succeed, or in case of an error, all changes are rolled back.

Example of using a transaction with Sequelize:

const { sequelize } = require('./models');

async function updateData() {
  const t = await sequelize.transaction();
  try {
    await ModelA.create({ /* data */ }, { transaction: t });
    await ModelB.update({ /* data */ }, { where: { id: 1 }, transaction: t });
    await t.commit();
  } catch (error) {
    await t.rollback();
    throw error;
  }
}

This approach guarantees that data remains in a consistent state even if errors occur during operations.