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
mongo localhost/db <<EOF db.dropDatabase() EOF 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 > d...
MongoDB does not provide a direct command to rename a database. Instead, renaming a database in MongoDB involves a workaround that includes copying data from the original database to a new one, then deleting the original database if desired. This process requires using commands to clone coll...
In contrast, the backup and restore operations create or use MongoDB-specific binary data, which preserves not only the consistency and integrity of your data but also its specific MongoDB attributes. Thus, for migration, it's usually preferable to use backup and restore as long as the...
Starting in MongoDB 4.0.2, dropping a collection deletes its associated zone/tag ranges. If you try to drop a collection in the admin database or the config database from amongossince MongoDB 5.0, the drop command and thedb.collection.drop()function will produce an error. Instead, connect...
Connection parameters: Database information meant for application configuration, such as Studio 3T. Connection string: A condensed string that you can pass to a client, such as MongoDB Compass. Flags: A complete mongo command that supplies the connection variables as individual flags....
There are several database servers and clients available, such as Oracle, MySQL, MySQLi, MariaDB, and MongoDB. The syntax for all of these is more or less the same. Mastering one means gaining control over most of them, and learning the queries of a database is both easy and enjoyable...
Details I have a database in which the user is a parent and it has some child documents child document has image data too and those images are stored in the AWS s3 bucket. I used MongoDB middleware remove to perform cascade delete. If I ...
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...
Backing Up a MongoDB Database Let’s cover backing up your MongoDB database first. An important argument to mongodump is --db, which specifies the name of the database which you want to back up. If you don’t specify a database name, mongodump backups all of your ...