%% Remove All Documents from Collection
% Connect to MongoDB® using the MongoDB C++ interface and remove all documents from a collection. In this example, the collection represents employee data.
%
% 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 is the connection object that contains the MongoDB connection. The object properties contain information about the connection and the database.
% The database name is mongotest.
% The user name is blank.
% The database server is dbtb01.
% The port number is 27017.
% This database contains 14 document collections.
%
% Verify the MongoDB connection.

isopen(conn)

% The database connection is successful because the isopen function returns 1. Otherwise, the database connection is closed.
%
% Remove all documents from the employeedata collection. Use an empty MongoDB query to specify removing all documents. The remove function removes three documents from the collection.

collection = "employeedata";
n = remove(conn,collection,"{}")

%
% Close the MongoDB connection.

close(conn)

% Copyright 2020 The MathWorks, Inc.