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Which is the method used to check whether collection is capped or not?
isCapped() command is used to check if a collection is a Capped collection or not. Advantages of Capped Collections: 1. Queries do not need an index to return documents in insertion order due to which it provide higher insertion throughput.
Which of the following is supported for backing up and restoring MongoDB deployments?
MongoDB Cloud Manager
The MongoDB Cloud Manager supports the backing up and restoring of MongoDB deployments. MongoDB Cloud Manager continually backs up MongoDB replica sets and sharded clusters by reading the oplog data from your MongoDB deployment.
What should I know about the mongorestore utility?
Here is a list of things you need to know about the expected behaviors of the mongorestore utility. The mongorestore utility enables users to restore data to an existing database or create a new database. When restoring data into an existing database, mongorestore will only use insert commands and does not perform any kind of updates.
How is mongorestore used to restore backups?
mongorestore is a simple utility that is used to restore backups. It can load data from either: A database dump file created by the mongodump command The standard input to a mongod or mongos instance
Can a MongoDB database be overwritten in mongorestore?
If the database doesn’t exist, mongorestore will create the specified database. If you do not specify a , mongorestore creates new databases that correspond to the databases where data originated and data may be overwritten. Use this option to restore data into a MongoDB instance that already has data.
How to run mongoestore from the command line?
The mongorestore command has the following form: Run mongorestore from the system command line, not the mongo shell. For example, to restore from a dump directory to a local mongod instance running on port 27017: As mongorestore restores from the dump/ directory, it creates the database and collections as needed and logs its progress: