adplus-dvertising
frame-decoration

Question

Object_Id is similar to _________ key in Relational Databases.

a.

primary

b.

secondary

c.

composite

d.

all of the mentioned

Posted under MongoDB

Answer: (a).primary

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. Object_Id is similar to _________ key in Relational Databases.

Similar Questions

Discover Related MCQs

Q. Which of the field is reserved for use as a primary key?

Q. Point out the wrong statement.

Q. To ensure functioning replication, do not store values that are of the _______ regular expression type in the _id field.

Q. The ______ field is always the first field in the document.

Q. __________ returns the JavaScript representation in the form of a string literal.

Q. Which of the following query is used to generate a new ObjectId, use the ObjectId() constructor with no argument?

Q. The __________ JavaScript shell and the MongoDB language drivers translate between BSON and the language-specific document representation.

Q. Point out the correct statement.

Q. BSON is a binary representation of ________ documents.

Q. MongoDB documents are composed of field-and-value pairs and have the following structure?

Q. Point out the wrong statement.

Q. To store documents larger than the maximum size, MongoDB provides the _______ API.

Q. Index keys that are of the _______ type are more efficiently stored in the index.

Q. MongoDB uses the ________ notation to access the elements of an array and to access the fields of an embedded document.

Q. Which of the following data structures are documents in MongoDB?

Q. Point out the correct statement.

Q. An application communicates with MongoDB by way of a client library, called _____________

Q. User-defined indexes on multiple fields is called ___________

Q. If your driver has a version number of 2.9.1, What is the major version?

Q. Updates that include _________ of field names may result in the reordering of fields in the document.