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- How to deploy and manage MongoDB using Docker?
- Introduction MongoDB is a popular open source NoSQL database designed to store and manage unstructured data. It provides high performance, scalability and flexibility for modern applications. Docker, on the other hand, is a containerization platform that enables developers to package their applications and dependencies into portable containers that run consistently across different environments. It simplifies the software delivery process by providing a lightweight, isolated runtime environment for applications. Set up the environment Install Docker on your local machine Before setting up MongoDB, it is important to install Docker on your local machine. Docker is a containerization platform that allows you to package and distribute applications in a portable way. It provides an easy to use
- MongoDB 1398 2023-09-15 08:17:02
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- Differences between RDBMS and MongoDB
- RDBMSRDBMS stands for Relational Database Management System. It stores data in entity form as tables. It provides multiple layers of information security. Each table may or may not have a primary key (used to uniquely identify records in the table) and foreign keys (used to identify the relationship between the two tables). RDBMS uses SQL language to query the database. Examples of popular RDBMS are oracle, sqlserver, mysql, etc. MongoDBMongoDB is a NoSQL database. It's open source. It is a document-oriented database that uses BSON (the binary version of JSON). BSON is a document storage format. MongoDB stores data in the form of documents and does not use SQL to query
- MongoDB 1057 2023-09-14 19:05:10
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- Remove array elements from MongoDB collection using update() and $pull
- Let's first create a collection containing documents ->db.removingAnArrayElementDemo.insertOne({"UserMessage":["Hi","Hello","Bye"]});{ "acknowledged":true, "insertedId":ObjectId ("5c
- MongoDB 1470 2023-09-13 16:45:09
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- How to create a user in MongoDB v3?
- To create a user in MongoDBv3, use the createUser() method. This allows you to create a user and upon creation also add the user, password and role. These roles assign permissions. The syntax is as follows - useadmindb.createUser( { user: "yourUserName", pwd: "yourPassword",&
- MongoDB 845 2023-09-13 11:05:02
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- How to define aliases in MongoDB Shell?
- To define an alias in MongoDB shell, you can use the following syntax - Object.defineProperty(this,'yourFunctionName',{ get:function(){ yourStatement1, . . &
- MongoDB 1545 2023-09-13 10:41:06
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- How to run MongoDB shell using mongos command?
- In order to start the MongoDB shell, you need to use the mongo command. Following is the syntax ->mongo First go to the MongoDBbin directory from the command prompt as shown in the image below - This is the command to start the mongoshell as shown in the screenshot below - This will produce the following output -
- MongoDB 1395 2023-09-12 15:33:07
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- How to create a new collection in MongoDB?
- To create a new collection in MongoDB, you need to use the createCollection() method. Case 1: The simplest syntax to create a new collection in MongoDB is as follows: db.createCollection("yourNewCollectionName"); Case 2: The alternative syntax to create a new collection in MongoDB is as follows: db.createCollections("yourNewCollectionName",options); Above The options parameter of can have the following values: return
- MongoDB 1438 2023-09-12 11:25:02
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- How to access a collection in MongoDB using Python?
- MongoDB is a well-known NoSQL database that provides a scalable and flexible way to store and retrieve data. Database collections can also be accessed through Python, a versatile programming language. Integrating MongoDB with Python enables developers to easily interact with their collection of databases. This article explains in depth how to access MongoDB collections using Python. It covers the steps, syntax, and techniques needed to connect, query, and manipulate data. PyMongo PyMongo is a Python library that acts as the official MongoDB driver. It provides a simple and intuitive interface to interact with MongoDB databases through Python applications
- MongoDB 1044 2023-09-10 15:21:04
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- How to delete array elements by index in MongoDB?
- You can delete array elements by index using the following two steps - first step is as follows - db.yourCollectionName.update({},{$unset:{"yourArrayFieldName.yourIndexValue":1}}); The above syntax will be in "yourIndexValue" Place a null value at the position. After that you need to extract null values from array field to remove from array elements. The second step is as follows -db.yourCollectionName.update({},{$pull:{"yourArrayFieldName&q
- MongoDB 1049 2023-09-08 12:17:02
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- Collection.find() always returns all fields in MongoDB?
- You can use the following syntax to return specific fields from collection.find(). Case 1 - The syntax is as follows - db.yourCollectionName.find({},{"yourFieldName":1}).pretty(); The above field name set to 1 means it will return only that field. If set to 0, it will return all fields except the field set to 0. Case 2 - The syntax is as follows - db.yourCollectionName.find({},{"yourFieldName":0}).pretty(); in order to understand the above syntax
- MongoDB 1235 2023-09-08 09:13:03
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- How to insert Python objects in Mongodb?
- You can use the pymongo library in Python to connect to a MongoDB database and use it to insert, update, delete, etc. objects in Python. The library supports Python datetime objects out of the box and you don't need to do anything special to insert dates in Mongo using PyMongo. For example, example frompymongoimportMongoClient#ThiswilltrytoconnecttoMongoDBonthedefaultportandhostclient=MongoClient()db=client.test_database#Insert
- MongoDB 1410 2023-09-02 21:37:02
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- 5 Useful Tools for Monitoring MongoDB Performance
- As more and more businesses turn to MongoDB for database management, it's important to keep a close eye on its performance. Monitoring MongoDB performance can help you identify any potential issues, prevent downtime, and improve the overall efficiency of your database. Here are 5 useful tools for monitoring MongoDB performance - MongoDB Compass MongoDBCompass is a visualization tool that provides a comprehensive view of your MongoDB database. It allows you to monitor the performance of your MongoDB instance in real time, including metrics such as disk usage, memory usage, and network traffic. Using MongoDBCompass, you can also identify slow-running queries and optimize them for better performance. It provides query
- MongoDB 1593 2023-09-02 16:05:06
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- How to sort documents and display only a single field in MongoDB 4?
- To sort documents in MongoDB4, use sort(). To display only a single sorted field, set this to 1. Let's create a collection containing documents ->db.demo611.insertOne({"Name":"Chris"});{ "acknowledged":true,"insertedId":ObjectId("5e987110f6b89257f5584d83")}&
- MongoDB 1571 2023-09-01 14:41:15
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- How to clear the console in MongoDB?
- To clear the console in MongoDB, you can use either of the following two syntaxes. The first syntax is as follows, this is the usage of the keyboard shortcut - Ctrl+L After pressing the above keys, you can clear the console in MongoDB. The second syntax is as follows - cls To understand the above syntax, let us implement them one by one. Here is a snapshot of my console. Looking at the sample output above, the console has been cleared. Let's check the console again.
- MongoDB 1669 2023-09-01 08:21:09
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- How to update the _id of a MongoDB document?
- You cannot update it, but you can save the new ID and delete the old ID. Please follow some steps to update MongoDB's _id. The steps are as follows: Step 1: In the first step, you need to store the ObjectId into a variable. anyVariableName=db.yourCollectionName.findOne({_id:yourObjectIdValue)}); Step 2: In the second step, you need to set a new id. yourDeclaredVariableName._id=yourNewObjectIdValue;Step 3: In the third step, you need to insert the new ID in the document. db.yourC
- MongoDB 1725 2023-08-31 22:29:02
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