dropCollection

Connect to MongoDB® using the MongoDB C++ interface and drop an existing collection.

Create a MongoDB connection to the database mongotest using the MongoDB C++ interface. Here, the database server dbtb01 hosts this database using port number 27017.

server = "dbtb01";
port = 27017;
dbname = "mongotest";
conn = mongoc(server,port,dbname)

conn = connection with properties:
           Database: "mongotest"
           UserName: ""
             Server: "dbtb01"
               Port: 27017
    CollectionNames: [14×1 string]

conn is the connection object that contains the MongoDB connection. The object properties contain information about the connection and the database.

Verify the MongoDB connection.

isopen(conn)

ans = logical
   1

The database connection is successful because the isopen function returns 1. Otherwise, the database connection is closed.

Display the collections in the database before dropping a collection by using the CollectionNames property.

conn.CollectionNames

ans = 14×1 string
    "dateissue"
    "product"
    "timestamps"
    "restaurants"
    "employees"
    "bsontest"
    "taxidata"
    "airlinesmall"
    "largedata"
    "patients"
    "genderMeanAge"
    "escalation"
    "nyctaxi"
    "tsunamis"

Drop an existing collection from the database by using the MongoDB connection. Specify the collection name taxidata.

collection = "taxidata";
dropCollection(conn,collection)

Display the collections in the database again by using the CollectionNames property. The database no longer contains the collection taxidata.

conn.CollectionNames

ans = 13×1 string
    "dateissue"
    "product"
    "timestamps"
    "restaurants"
    "employees"
    "bsontest"
    "airlinesmall"
    "largedata"
    "patients"
    "genderMeanAge"
    "escalation"
    "nyctaxi"
    "tsunamis"

Close the MongoDB connection.

close(conn)