MongoDB

MongoDB: Aggregation

Aggregation operations process data records and return computed results. Aggregation operations group values from multiple documents together and can perform a variety of operations on the grouped data to return a single result. MongoDB provides three ways to perform aggregation: Aggregation pipeline Map-reduce function Single-purpose aggregation methods db.orders.aggregate([ { $match:[...]

By |July 31, 2021|

MongoDB: Cross-platform document-oriented database

MongoDB is a source-available cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with optional schemas. MongoDB is developed by MongoDB Inc. and licensed under the Server Side Public License.   Create Database Syntax Basic syntax of use DATABASE statement is as follows − use[...]

By |December 22, 2020|
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