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Why SHOW DBS does not show my databases in MongoDB?
This SHOW DBS command won’t show the databases because you may have not created a document for a collection. If you will create document for a collection then the created database will be visible.
Let us implement the above concept and create a database −
> use web; switched to db web
Following is the query to show all databases −
> show dbs;
This will produce the following output −
admin 0.001GB config 0.000GB local 0.000GB my 0.001GB sample 0.001GB sampleDemo 0.000GB studentSearch 0.000GB test 0.010GB university 0.000GB
Above, the WEB database is not visible since we haven’t created a collection in the same database.
In order to display WEB database, we need to create a collection with documents in the same database as shown below −
> db.check.insertOne({"ClientName":"John"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cb806c2623186894665ae35")
}Following is the query to display all documents from the collection with the help of find() method −
> db.check.find();
This will produce the following output −
{ "_id" : ObjectId("5cb806c2623186894665ae35"), "ClientName" : "John" }Let us execute the above command to display all databases −
> show dbs;
This will produce the following output −
admin 0.001GB config 0.000GB local 0.000GB my 0.001GB sample 0.001GB sampleDemo 0.000GB studentSearch 0.000GB test 0.010GB university 0.000GB web 0.000GB
Look at the above sample output, WEB database is now visible.
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