Mongo db nosql (1)
- 1. Presented By:- Jayesh Bharda (116373) Bhavesh Sarvaiya (115347) Ketan Navadiya (115331)
- 2. ∗ What is NoSQL? ∗ What is MongoDB? ∗ Database ∗ Collection ∗ Document ∗ MongoDB to SQL Terminology ∗ Advantages of MongoDB over RDBMS ∗ CRUD Operation ∗ References Topics
- 3. ∗ MongoDB is a No SQL database. ∗ MongoDB is a cross-platform, document oriented database that provides, high performance, high availability, and easy scalability. ∗ MongoDB works on concept of collection and document. ∗ It is written in C++. What is MongoDB?
- 4. ∗ Database is 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. Database
- 5. ∗ Collection is a group of MongoDB documents. ∗ It is the equivalent of an RDBMS table. ∗ A collection exists within a single database. ∗ Documents within a collection can have different fields. ∗ Typically, all documents in a collection are of similar or related purpose. Collection
- 6. ∗ Documents exist inside a collection. ∗ Documentation can almost be thought of as rows in a sql database, except they have key difference: ∗ Documents are schema-less ∗ Document used JSON Syntax ∗ The maximum size of a document is 16 megabytes ∗ Not Relational Document
- 7. MongoDB SQL database database collection table document record (row) field column embedded documents join primary key (Default key _id provided by mongodb itself) primary key (user designated) Index index MongoDB to SQL Terminology
- 8. ∗ Schema less − MongoDB is a document database in which one collection holds different documents. Number of fields, content and size of the document can differ from one document to another. • Structure of a single object is clear. • No complex joins. ∗ Ease of scale-out • Conversion/mapping of application objects to database objects not needed. Advantages of MongoDB over RDBMS
- 9. ∗ Document Oriented Storage − Data is stored in the form of JSON style documents. ∗ Index on any attribute ∗ Replication and high availability ∗ Rich queries ∗ Fast in-place updates ∗ Professional support by MongoDB Why Use MongoDB?
- 10. ∗ Big Data ∗ Content Management and Delivery ∗ Mobile and Social Infrastructure ∗ User Data Management ∗ Data Hub Where to Use MongoDB?
- 11. User of MongoDB
- 12. ∗ The use Command • MongoDB use DATABASE_NAME is used to create database. ∗ Syntax • use DATABASE_NAME ∗ Example • use mydb ∗ To check your currently selected database • Db ∗ To check your databases list • show dbs ∗ To drop a existing database • db.dropDatabase() • This will delete the selected database Create Database
- 14. ∗ The createCollection() Method • MongoDB db.createCollection(name, options) is used to create collection. ∗ Syntax • db.createCollection(name, options) ∗ Example • db.createCollection(“student") • db.createCollection("mycol", { capped : true, autoIndexId : true, size : 6142800, max : 10000 } ) Create Collection
- 15. ∗ In MongoDB, you don't need to create collection. ∗ MongoDB creates collection automatically, when you insert some document. • db.stud.insert({"name" :”bhavesh"}) ∗ db.collection.drop() • db.stud.drop() Continue…
- 16. ∗ To insert data into MongoDB collection, to use MongoDB's insert() or save() method. ∗ Syntax • db.COLLECTION_NAME.insert(document) ∗ Example • db.student.insert({no:”115347”,name:”bhavesh”,address:{t o:”ayavej”,taluka:”jesar”,dist:”Bhavnagar”,pin:”364510”}}) Insert Document
- 17. ∗ The find() Method • To query data from MongoDB collection, you need to use MongoDB's find()method. ∗ Example • db.student.find() ∗ limit() Method • db.student. find().limit(1) Query Document
- 18. ∗ skip() method • In MongoDB, skip() method is used to skip the document. It is used with find() and limit() methods. ∗ Syntax • db.COLLECTION_NAME.find().limit(NUMBER).skip(NUMBER) ∗ Example • db.student.find().limit(1).skip(2) ∗ sort() method • db.COLLECTION_NAME.find().sort({KEY:1}) • db.student.find().sort(“name”:-1) Continue…
- 19. ∗ Update() method is used to update or modify the existing documents of a collection. ∗ Syntax: • db.COLLECTION_NAME.update(SELECTIOIN_CRITERIA, UPDATED_DATA) ∗ Example • db.student.find() Update documents
- 21. ∗ remove() method is used to remove a document from the collection. ∗ Syntax • db.COLLECTION_NAME.remove(DELLETION_CRITTERIA) ∗ Example • db.student.remove({name:”bhavo”}) Delete Document
- 22. ∗ https://docs.mongodb.com ∗ https://www.tutorialspoint.com ∗ https://www.javatpoint.com References
- 23. Thank You