$ npm install now, you should see a node_modules folder and a package.json file in your repository.īefore moving on to the Prisma initialization, the last configuration step is to create a configuration for TypeScript at the repository root. $ npm install prisma typescript ts-node -save-dev Then, we will install all the mandatory dependencies such as TypeScript and Prisma. How to Set Up a Basic Twitter Projectįirst, you need to create a new folder for this project and move into it: $ mkdir minimalistic-twitter Note: You don't need to be an expert! Only the basics like creating a table and making some requests are essential here. The output will be the version.Įven though I'm taking a simple approach to this new library, I recommend that you have basic SQL knowledge to fully understand the tutorial. Note: If you want to check your Node.js version, you can type: node -v in a terminal. If you don't, just update your Node before starting the next section. Prerequisitesīefore getting started, take the time to double-check if you have version 12.2 or higher of Node.js. If, in the future, you want to use Prisma with a PostgreSQL database, here is a tutorial on creating a PostgreSQL database using Docker-Compose. The project will run by itself if you follow the steps of this tutorial. This means that you don't need to configure a database on your computer. SQLite is a self-contained database engine. To keep this introduction accessible, we will use Node with SQLite. I will show you how to build your first Node.js database using Prisma. "Prisma helps app developers build faster and make fewer errors with an open source ORM for PostgreSQL, MySQL and SQLite." – Prisma homepage Let's build a simple Twitter database using Node, Prisma, and SQLite That is why I decided to try it and to replace my previous database management library: TypeORM. ![]() To summarize, Prisma is a modern ORM that plays nice with all the trending tech stacks. You will see how that works in the coming sections.Īlso, the ORM works well with Next.js, GraphQL, Nest.Js, Express.js, Apollo, and Hapi. The schema definition is easy to read by humans – no more headache there. Yes, this library will help you build and manage your Node.js database – and it's compatible with TypeScript! It will generate all the types of your entities automatically. It's a modern ORM (Object-Relational-Mapping tool) that works with Node.jsand TypeScript. ![]() In this tutorial, you have learned how to control the execution flow of the statements.Lately I've been seeing many tweets and articles about Prisma. Notice that the statements execute in parallel, therefore, each time you run the program, the order of execution may be different. The sum of 2 and 2 is 4 Code language: JavaScript ( javascript )Īs you see in the output, the order of execution is not the same as it was called in the program. It’s safe to nest the serialize() method as follows: db.serialize( () => `) Other statements will wait in a queue until all the previous statements are executed.Īfter the serialize() method returns, the execution mode is set to the original mode again. It means that only one statement can execute at a time. The serialize() method puts the execution mode into serialized mode. ![]() Executing statement in serialized mode with rialize Let’s look into each method in detail to understand how it works. The serialize() method allows you to execute statements in serialized mode, while the parallelize() method executes the statements in parallel. The sqlite3 module provides you with two methods for controlling the execution flow of statements. Summary: in this tutorial, you will learn how to control the execution flow of statements.
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