![]() In this case you can simply set a filter on the property_type field that is equal to the requested value. Suppose you want to extract all properties of type “House” from the AirBnB database. Information about the indexes defined for the selected collection is also shown. The other 3 menus ( Explain Plan, Indexes and Validation) will not be used in this tutorial, but are used, as you can see from their names, respectively to analyze the execution plan of a query, manage indexes and insert validation rules for the documents stored in the collection.įinally, in the upper right part of the screen some information about the number of comments saved, the space occupied both by the collection and on average by each document is always displayed. It will take you to the Create Database pop-up dialogue. Next we’ll see how to use it to understand which queries can return results of interest. Step 1: Click on the Create Database button from the database tab. The Schema menu is used to analyze the schema of the data in the collection and retrieve some statistics about the distribution of the data. So it starts operating within the scope of the new database immediately. The second menu is related to aggregation pipelines and is used for more complex queries that require transformation operations of the data present in the documents. In either MongoDB Compass or the MongoDB Shell app, use the following command to create a database: use mynewdatabase MongoDB initiates and selects the new database by default when you run the above command. Also, if there is any syntax error the badge next to the form field will have a red colored background. As you type, in fact, MongoDB Compass will suggest the fields and operators that might be useful to compose the query. Very useful features of the query form are the auto-completion and the syntax validation. We are working on localhost and have run MongoDB on the default port 27017 so we can accept all the defaults and just hit Connect. It’ll prompt you for the host and a port number. To enter all these options, simply expand the query form by clicking on the OPTIONS button. We start by opening up MongoDB Compass and connecting to your database. It is possible to insert filters, projections, sort conditions and limitation of the number of records returned. For each document displayed, you can edit it, copy it to your clipboard, duplicate it and delete it using the buttons on the right associated with each document.Īs mentioned earlier, this screen can be used to query the collections. The other views are the JSON (available since version 1.2) and the tabular view. If there are complex structures within a document (embedded documents, arrays) it is possible to expand them to display the data present. Thus, you can create a new database in MongoDB.The default view is that of the list. This will create a new database humanResourceDB with the new employees collection shown below. MongoDB Compass - Create DatabaseĮnter your database name and collection name and click Create Database. Once it connects with the MongoDB server, click on the top "CREATE DATABASE" button which will open the popup window, as shown below. For that, open Compass and connect with your local or remote database. You can create a new database using MongoDB Compass. So, executing db.dropdatabase() will throw an error. To delete a database, use the db.dropDatabase() method which deletes a current database.Ībove, indicates that the database deleted successfully. This is because there is no collection in it. To check all the databases, use the "show dbs" command, as shown below.Īs you can see above, the "admin", "config", and "local" are default databases.Īs of now, "humanResourceDB" is not visible. ![]() ![]() Notice that it promts to humanResourceDB> now. MongoDB will automatically switch to the newly created database. The following shows how to create or switch MongoDB database in MongoDB shell mongosh: Create or Switch Database in MongoDB Shell
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