Consequently, you must use Atlas for your database deployment if you want to run those examples. Note that the aggregation pipelines in the Full-Text Search Examples section leverage Atlas Search. Install and run a MongoDB single server locally on your workstation.Provision a Free Tier MongoDB Cluster in MongoDB Atlas, which is MongoDB Inc.'s cloud-based Database-as-a-Service (once deployed, in the Atlas Console, there is a button you can click to copy the URL of the cluster).If you don't already have access to a MongoDB database, the two most accessible options for running a database for free are: You need to know the MongoDB URL for connecting to the database and, if authentication is enabled, the credentials required for full read and write access. You can run this deployment locally on your workstation or remotely on-prem or in the cloud. The database deployment for you to connect to can be a single server, a replica set or a sharded cluster. ![]() A few of the example pipelines use aggregation features that MongoDB introduced in releases following version 4.2. Note that each example aggregation pipeline shown in the second major part of this book is marked with the minimum version of MongoDB that you must use to execute the pipeline.
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