Related Topics MongoDB Question 71 What are query modifiers in MongoDB, and how do you use them in a query? Answer In MongoDB, query modifiers are special options or flags that you can include in a query to modify its behavior and customize the results. They provide additional control and functionality to the queries. Here …
Related Topics MongoDB Question 65 What is the purpose of the limit() method in MongoDB, and how do you use it in a query? Answer In MongoDB, the limit() method is used to restrict the number of documents returned in a query result. It allows you to specify the maximum number of documents that should …
Related Topics MongoDB Question 70 What is the purpose of the sort() method in MongoDB, and how do you use it in a query? Answer In MongoDB, the sort() method is used to specify the sorting order of documents in a query result. It allows you to sort the documents based on one or more …
Related Topics MongoDB Question 61 What is an aggregation pipeline in MongoDB, and how does it differ from a standard query? Answer In MongoDB, an aggregation pipeline is a framework for performing advanced data processing and transformation operations on collections of documents. It allows you to create a series of stages, each representing a specific …
Related Topics MongoDB Question 57 How to use the $sort stage in the MongoDB aggregation pipeline, and what is its purpose? Answer The $sort stage in the MongoDB aggregation pipeline is used to sort the documents in the pipeline based on one or more fields. It allows you to specify the sorting order (ascending or …
Related Topics MongoDB Question 49 What are update operators in MongoDB, and how do you use them to modify data in the database? Answer In MongoDB, update operators are special operators used to modify data in a database collection. These operators provide powerful ways to update specific fields or perform complex updates on documents. MongoDB …
Related Topics MongoDB Question 45 How to use the $elemMatch operator in MongoDB, and what is its purpose? Answer The $elemMatch operator in MongoDB is used to query arrays and retrieve documents that contain at least one element matching specified criteria within the array field. The purpose of $elemMatch is to provide a way to …
Related Topics MongoDB Question 41 What is a query in MongoDB, and how do you use it to retrieve data from the database? Answer In MongoDB, a query is a way to retrieve data from the database based on specified criteria. It allows you to retrieve documents that match specific conditions or patterns defined by …
Related Topics MongoDB Question 34 What is data modeling in MongoDB and how does it differ from data modeling in a traditional relational database management system (RDBMS)? Answer Data modeling in MongoDB refers to the process of designing the structure and organization of data within a MongoDB database. It involves defining the document schema, establishing …
Related Topics MongoDB Question 29 What data types does MongoDB support and how do they differ from data types in a traditional relational database management system (RDBMS)? Answer MongoDB supports various data types that cater to different types of data and use cases. Here are some of the commonly used data types in MongoDB and …
