The field_key is a required input argument which represents a particular field of a document followed by a sorting order.The query_string in the find() method is an optional input argument that retrieves the documents from a collection on the basis of a specified choice criteria.Mongo database ‘map()’ Syntax > db.collection_name.find(). The cursor.sort() method has the following prototype form: In the Mongo universe, the sort() method styles the documents of a Mongo collection based on a particular field of a document. In this tutorial, we will learn how to handle the cursor.sort() method provided by the Mongo database. Openness to work on small batches of data as developers don’t need to wait for the processing and download of the complete record-set.Intelligibility and Clarity on the ad-hoc and complex queries of the sequential nature having large result sets and low consistency requirements.It saves system memory by allowing batch inserts and updates.it returns the data in batches and increases the database performance 1: Pictorial representation of a Cursor in Mongo collection 1.2.1 Why Cursor in MongoDB? The below diagram lists 4 documents where the Mongo cursor will point to the first document and then iterate through all the other documents of a collection.įig. The behavior of cursor allows an automatic iteration across the results of the query however, developers can explicitly go through the items returned in the cursor object. In Mongo world, a cursor is an object that allows developers to iterate through the documents of a Mongo collection. Replication: MongoDB can give high availability with the replica sets.To offer horizontal scalability, MongoDB uses sharding by splitting the data across the many MongoDB occurrences.MongoDB offers indexes to improve the search performance within the NoSQL database.It often provides queries to return the particular fields inside the documents This database supports search by field-name, range queries, and the regular expressions.
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