Which of the following field comes by default when you insert one document in the Collection?Answer choicesSelect only one optionREVISITB_noPrimary key_Sno_id

Which of the following statements are true about the _id field in MongoDB? (Select all that apply.) A. The user must specify the _id field for each inserted document.B. The _id field is required for each document.C. The _id field must be unique.D. The _id field is automatically included and populated with an ObjectId if the _id field is omitted in an inserted document.

A document should only ever have one purpose.Group of answer choicesTrueFalse

Choose the correct answerWhich one of the following is a set of one or more attributes taken collectively to uniquely identify a record?OptionsSub keyCandidate KeySuper KeyForeign Key

Which of the following operation adds a new document to the users collection?(1 Point)inserttruncatedropadd

orrect answerStudent(Id, Name, Dept_name, Tot_cred)In this query which attribute form the primary key?OptionsTot_credDeptNameId