Introduction to mongo db
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MongoDB is an open source document-oriented NoSQL database that uses JSON-like documents with dynamic schemas to store data. It works with collections and documents where a collection is a group of documents and a document is a set of key-value pairs. MongoDB can scale horizontally, provides high availability through replication, and allows for fast in-place updates. It is commonly used for big data, content management, mobile applications, and user data management. To use MongoDB, download it, optionally specify an alternate data directory, and run the mongod.exe process which will be waiting for connections once started successfully.
Introduction to mongo db
- 1. Introduction to MongoDB By: Hemant Sharma
- 2. What is MongoDB? •An open source cross-platform document oriented database system. •Classified as a NoSQL database. •Use JSON like documents with dynamic schemas to store data. •Works on concept of collection and document.
- 3. Basic Terminology RDBMS MongoDB Database Database Table Collection Tuple/Row Document Column Field Table Join Embedded Document Primary Key Primary Key ( Default key _id provided by MongoDB) MongoDB Terminology
- 4. MongoDB Terminology • Database : A physical container for collections. Each database gets its own set of files on the file system. A single MongoDB server typically has multiple databases. •.Collection : A group of MongoDB documents. Exists within a single database. Typically, all documents in a collection are of similar or related purpose. •Document : A document is a set of key-value pairs. Documents have dynamic schema. Dynamic schema means that documents in the same collection do not need to have the same set of fields or structure, and common fields in a collection's documents may hold different types of data.
- 6. Why to use MongoDB? •Dynamic Schema: one collection holds different types of documents. Number of fields, content and size of the document can be differ from one document to another. Supports fluent polymorphism. •Indexing of any attribute and Embedded document model provides high performance and need for expensive joins. •Automatic Scaling : Horizontal scaling is a part of core functionality.. •High Availability: MongoDB’s replication facility, called replica sets, provide automatic failover and data Redundancy. •Fast in place update. •Conversion / mapping of application objects to database objects not needed
- 7. Where to use MongoDB? •Big Data •Content Management and Delivery •Mobile and Social Infrastructure •User Data Management •Data Hub
- 8. •Connect to MongoDB: We use mongo.exe shell. Issue following command on Command Prompt: •{path to parent directory}mongodbbinmongod.exe •MongoDB is self-contained and does not have any other system dependencies. So you can extract it to any directory. •Data Directory : The default location for the MongoDB data directory is C:datadb. Create this folder or you can also use an alternate path. •Start MongoDB : To start database process, execute from command prompt {path to parent directory}mongodbbinmongod.exe With alternate data directory option: {path to parent directory}mongodbbinmongod.exe –dbpath d:data The waiting for connections message in the console output indicates that the mongod.exe process is running successfully. How to install & Run MongoDB?
- 9. How to install & Run MongoDB? •Download Link : http://www.mongodb.org/downloads •MongoDB is self-contained and does not have any other system dependencies. So you can extract it to any directory. •Data Directory : The default location for the MongoDB data directory is C:datadb. Create this folder or you can also use an alternate path. •Start MongoDB : To start database process, execute from command prompt {path to parent directory}mongodbbinmongod.exe With alternate data directory option: {path to parent directory}mongodbbinmongod.exe –dbpath d:data The waiting for connections message in the console output indicates that the mongod.exe process is running successfully.