ORM-libraries-for-NodeJS-Typescript-and-SQL.png

ORM.tar.gz

node-server

typeorm-setup

docker-prisma

basic-api

basic-express

typeorm-crud

typeorm-SQL

typeorm-associations

Object Relational Mappers (ORM) are becoming popular in building modern backend applications as they help maintain a consistent codebase, improve security, and provide ease in working with different databases. Also, TypeScript has almost become a must-use language for building JavaScript applications.

In this course, you’ll start by getting familiar with Node.js and Express. You’ll then go over the main features of TypeScript and its advantages over JavaScript. Next, you’ll learn how to do a Docker setup of PostgreSQL. Moreover, this will be followed by introductions to two of the most popular TypeScript ORMs for Node.js: Prisma and TypeORM. Along the way, you’ll practice your skills by building two projects. In the end, you’ll explore some advanced features of these ORMs.

This course will equip you with the skills, knowledge, and hands-on experience to work with SQL databases and Node.js using TypeScript ORMs.

Getting Started with TypeScript ORM Libraries for Node.js

When retrieving records from the database, what property is used to include related tables in the results?

When retrieving records from the database, what property is used to include related tables in the results?

Which of the following is not a valid decorator for specifying relationships in TypeORM?

Which of the following is not a valid decorator for specifying relationships in TypeORM?

To specify in which of the tables the join column with a foreign key will exist.

To act as a subscription decorator that runs each time a relation query is run.

To join multiple columns to the base or parent table.

```

@ManyToOne(() => Employer, (employer) => employer.employee)
@JoinColumn()
employer?: Employer;

```

What’s the purpose of using the `@JoinColumn` decorator when creating a many-to-one or one-to-many relationship?

<pre><code>
@ManyToOne(() =&gt; Employer, (employer) =&gt; employer.employee)
@JoinColumn()
employer?: Employer;

</code></pre>
What’s the purpose of using the <code>@JoinColumn</code> decorator when creating a many-to-one or one-to-many relationship?

Take a quiz to test your understanding of relationships between tables using TypeORM.

Course Overview

Node.js Features and Setup

TypeScript Features and Setup

SQL – Introduction and Setup

Understanding ORMs for Node.js

Prisma

Flight Booking System

TypeORM

Advanced Topics

School Grading System

Conclusion

Quiz: Relationships between Tables