If the collection does not exist in the database and cannot be appropriately deleted, the result will be false. Use the drop and remove methods to delete a collection from MongoDB. When uninstalling a collection, you must also specify the collection name. Use the drop() Method To delete a...
To delete a collection from a database, you must first connect to the database in question. If you have not connected to or accessed the specified database, the collection will not be destroyed. The below query shows how you need to use the specified database before deleting the collection...
At the heart of MongoDB’s native replication system is theoplog (operation log), a capped collection that logs every write operation—insert, update, and delete—performed on your MongoDB cluster. By tailing the oplog, you can stream CDC events from the source database to target systems usi...
MongoDB provides monitoring and tools to observe and address the performance overall health of your database instances. Read on to understand the metrics and tools you can use to monitor your clusters. In what follows, we’ll guide you through: Why it’s important to monitor MongoDB K...
MongoDB shell version: 2.2.2 connecting to: localhost/db { "dropped" : "db", "ok" : 1 } bye 1. 2. 3. 4. 5. 6. 7. command for Database drop is : first select the database which you want to delete use < database name > ...
MySQL Shell Prompt Now, executing queries at this prompt is both educational and enjoyable. Create a MySQL Database Create a database named “tecmint“. create database tecmint; Note: The message indicates that the query was successful, meaning the database is created. ...
in object storage, it can be configured as the underlying storage for a Delta Lake. To make this work, you need to set up a Federated Database Instance to copy our MongoDB data and utilize MongoDB Atlas Data Federation's $out to S3 to copy MongoDB Data and land it in an S3 bucket...
On starting with MongoDB, I found that setting up and connecting to a local MongoDB database wasn’t very straightforward. In this post, I will talk about how to setup a local instance of MongoDB, run it, insert data into it via the Mongo shell, view it using a GUI like MongoDB ...
Start MongoDB Shell Step 4: Using MongoDB to Manage Databases WithMongoDBinstalled, let’s have a quick run-through of some of the operations on the shell. To view the databases currently in place, run the command shown. By default, MongoDB provides a test database calledtest. ...
After the number of connections to an ApsaraDB for MongoDB instance reaches the upper limit, new connection requests cannot be responded. This topic describes how to troubleshoot failed database connections after the number of connections reaches the upper l...