Update

 

try {
   db.collection1.updateOne(
      { "name" : "kim" },
      { $set: { "age" : 99 } }
   );
} catch (e) {
   print(e);
}

 

try {
   db.collection1.updateMany(
      { "name" : "kim" },
      { $set: { "age" : 99 } }
   );
} catch (e) {
   print(e);
}