MongoDB is developed and maintained by MongoDB, Inc. MongoDB, Inc. was founded in 2007 in New York City, USA, by its founders Eliot Horowitz, Dwight Merriman, and Kevin Ryan. The company was originally founded as 10gen to focus on developing and supporting the MongoDB database, and was renamed MongoDB, Inc. in 2013. MongoDB has become the market leader in NoSQL databases, with more than 16,000 customers and 320,000 community members. NoSQL database is a
#Who does MongoDB belong to?
MongoDB is developed and maintained by MongoDB, Inc.
MongoDB, Inc. Background
- Established: 2007
- Headquarters:New York City, United States
- Founders: Eliot Horowitz, Dwight Merriman and Kevin Ryan
- Business areas: Database software, especially document-oriented NoSQL Database
History
MongoDB, Inc. was originally established under the name 10gen to focus on developing and supporting the MongoDB database. In 2013, the company changed its name to MongoDB, Inc. to better reflect its core products.
Market Leadership
MongoDB has become the market leader in NoSQL databases and is used in large-scale applications across a variety of industries. The company has more than 16,000 customers and more than 320,000 community members.
Related Terms
- NoSQL Database: A type of database that does not follow the traditional relational database model.
- Document-oriented: Data is stored in the form of documents (similar to JSON) with a flexible schema.
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How to view MongoDB version: Command line: Use the db.version() command. Programming language driver: Python: print(client.server_info()["version"])Node.js: db.command({ version: 1 }, (err, result) => { console.log(result.version); });

MongoDB provides a sorting mechanism to sort collections by specific fields, using the syntax db.collection.find().sort({ field: order }) ascending/descending order, supports compound sorting by multiple fields, and recommends creating indexes to improve sorting performance.

To connect to MongoDB with Navicat: Install Navicat and create a MongoDB connection; enter the server address in the host, enter the port number in the port, and enter the MongoDB authentication information in the user name and password; test the connection and save; Navicat will connect to the MongoDB server.

MongoDB provides a variety of document deletion methods: Delete a single document: Use the deleteOne() method to specify a query object. Delete multiple documents: Use the deleteMany() method to specify a query object. Delete the entire collection: Use the drop() method. Delete documents using index: Use the findOneAndDelete() method to specify a query object and return the deleted document. Delete embedded documents: Use the $unset update operator to set the embedded document field to null.

There are two ways to create a MongoDB user: Use the mongoDB shell: Use the use command to switch to the admin database. Use the db.createUser command to create a user, specifying the user name, password, and role. Using MongoDB Compass: Expand the "Security" section and click the "Users" tab. Click the "Add User" button, enter the user name, password and select a role.

Steps to create a database in MongoDB: 1. Open the MongoDB Shell; 2. Specify the database name through the use command; 3. Use the db command to check whether the database has been created; 4. Create a collection (optional); 5. Use the show collections command to check whether the collection has been created.

MongoDB lacks transaction mechanisms, which makes it unable to guarantee the atomicity, consistency, isolation and durability of database operations. Alternative solutions include verification and locking mechanisms, distributed transaction coordinators, and transaction engines. When choosing an alternative solution, its complexity, performance, and data consistency requirements should be considered.

Transaction processing in MongoDB provides solutions such as multi-document transactions, snapshot isolation, and external transaction managers to achieve transaction behavior, ensure multiple operations are executed as one atomic unit, ensuring atomicity and isolation. Suitable for applications that need to ensure data integrity, prevent concurrent operational data corruption, or implement atomic updates in distributed systems. However, its transaction processing capabilities are limited and are only suitable for a single database instance. Multi-document transactions only support read and write operations. Snapshot isolation does not provide atomic guarantees. Integrating external transaction managers may also require additional development work.


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