This certification validates practical skills in database management, including data preparation, analysis, governance, and communicating reliable insights. It is intended for professionals who build or operate data-driven solutions.
Which two are valid MongoDB BSON types? (Choose two.)
A products collection needs to update the value of the qty field to 100 for a document with a “card” item value. It should insert a new document if it does not exist.
What command should be used?
Given the following documents in the employees collection:
{ _id: 0, name: “Y.B.”, department: “Sales” },
{ _id: 1, name: “E.H.”, department: “Engineering” },
{ _id: 2, name: “C.Y.”, department: “Support” },
What mongosh command will find a document with name “E.H.”?
Given the following query:
db.restaurants.find({“borough” : “Brooklyn” , “grades.score” : {$gt:5}})
No index exists for the restaurant collection.
What index definition most improves the performance?
There is a collection of patients for a medical practice.
Which two attributes associated with the patient should be embedded into the patient document rather than stored in its own collection and referenced? (Choose two.)