How To Display Collections In Mongodb
Mongodb provides the db createcollection method to explicitly create a collection with various options such as setting the maximum size or the documentation validation rules.
How to display collections in mongodb. A collection is analogous to a table of an rdbms. Use mydb show collections output. First select the database you want to view the collection. Mongodb show collection use show collections command from mongodb shell to list all collections created in the current database.
In a relational database like mysql a schema defines the organization structure of data in a database. Listcollections action on the database to run the command when access control is enforced. Mongodb show collection select your database and run show collections command to list available collections in mongodb database. Learn the top 10 most common commands for mongodb beginners including the command to log into mongodb show all databases and select a database to work with.
This is possible because mongodb is a schema free database. To query data from mongodb collection you need to use mongodb s find method. If you are not specifying these options you do not need to explicitly create the collection since mongodb creates new collections when you first store data for the. When both authorizedcollections and nameonly options are set to true the command returns only those collections for which the user has privileges.
A flag when set to true and used with nameonly. Mongodb is a schema less database so it can store any number of fields to the documents. A collection may store a number of documents. Mongodb show collection is a command from the mongodb shell that helps in listing the collections created in the current database.
To view the collection you need to select the one that you want to view. If we want to fetch all documents from the collection the following mongodb command can be used. A collection may store documents those who are not same in structure. What is mongodb list collections.
Mongodb list collection is all about storage for the document. It is similar to tables in mysql to store the records. Find method displays the documents in a non structured format but to display the results in a formatted way the pretty method can be used. If you want to list the available collections in mongodb database all you need to do is select the mydb then run show collection command.