MongoDB MCQs: This section contains multiple-choice questions and answers on the various topics of MongoDB.List of MongoDB MCQs1. Amongst which of the following is / are true about MongoDB?MongoDB is a cross-platform database Document oriented database High performance database All of the ...
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type:{type:String,enum:['text','multiple_choice','rating'],required:true,},options:[String],// 用于选择题});constsurveySchema=newmongoose.Schema({title:String,description:String,questions:[questionSchema],// 嵌套文档});constSurvey=mongoose.model('Survey',surveySchema);...
Horizontal scaling divides the dataset and distributes data over multiple servers, or shards. AdvancedMongoDB Interview Questions and Answers 41. What are the components of the Sharded cluster? The sharded cluster has the following components: ...
All the records in the segment have identical characteristics. (There is no reason to continue asking further questions segmentation since all the remaining records are the same.) The improvement is not substantial enough to warrant making the split ...
This document provides answers to common diagnostic questions and issues. If you don't find the answer you're looking for, check thecomplete list of FAQsor post your question to theMongoDB Community. Where can I find information about amongodprocess that stopped running unexpectedly?
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Ensure that the system default TCP keepalive is set correctly. A value of 300 often provides better performance for replica sets and sharded clusters. See:Does TCP keepalive time affect MongoDB Deployments?in the Frequently Asked Questions for more information. ...
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http://stackoverflow.com/questions/2892729/mongodb-vs-cassandra