Mongo DB: Fundamentals & Basics/ An Overview of MongoDB/ Mongo DB tutorials
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The document discusses MongoDB, an open-source document database. It provides an overview of MongoDB, including what it is, why it is used, its basic concepts like databases, collections, and documents, and how it compares to a relational database. It also covers MongoDB commands for creating and dropping collections, inserting, querying, and updating documents.
![SQL vs Mongodb
SQL SELECT Statements MongoDB find() Statements
SELECT * FROM users db.users.find()
SELECT id, user_id, status FROM users db.users.find( { }, { user_id: 1, status: 1 } )
SELECT user_id, status FROM users db.users.find( { }, { user_id: 1, status: 1, _id: 0 } )
SELECT * FROM users WHERE status = "A" db.users.find( { status: "A" } )
SELECT user_id, status FROM users WHERE status = "A" db.users.find( { status: "A" }, { user_id: 1, status: 1, _id: 0 } )
SELECT * FROM users WHERE status != "A" db.users.find( { status: { $ne: "A" } } )
SELECT * FROM users WHERE status = "A" AND age = 50 db.users.find( { status: "A", age: 50 } )
SELECT * FROM users WHERE status = "A" OR age = 50 db.users.find( { $or: [ { status: "A" } , { age: 50 } ] } )
SELECT * FROM users WHERE age > 25 db.users.find( { age: { $gt: 25 } } )
7/28/2016Pawan Tiwari](https://image.slidesharecdn.com/mongodb-fundamentalsbasics-160728122300/85/Mongo-DB-Fundamentals-Basics-An-Overview-of-MongoDB-Mongo-DB-tutorials-14-320.jpg)
Mongo DB: Fundamentals & Basics/ An Overview of MongoDB/ Mongo DB tutorials
- 1. Mongo DB: Fundamentals & Basics By Pawan
- 2. ļ§ We have INSTRUCTOR LED - both Online LIVE & Classroom Session ļ§ Present for classroom sessions in Bangalore & Delhi (NCR) ļ§ We are the ONLY Education delivery partners for Mulesoft, Elastic, Pivotal & Lightbend in India ļ§ We have delivered more than 5000 trainings and have over 400 courses and a vast pool of over 200 experts to make YOU the EXPERT! FOLLOW US ON SOCIAL MEDIA TO STAY UPDATED ON THE UPCOMING WEBINARS
- 3. Online and Classroom Training on Technology Courses at SpringPeople Non-Certified Courses ā¦and many more Certified Partners
- 4. What is MongoDB ļµ MongoDB is an open-source document database and leading NoSQL database ļµ Schema less ļµ Stores JSON objects ļµ document oriented database that provides ļµ high performance ļµ high availability ļµ easy scalability 7/28/2016Pawan Tiwari
- 5. Why MongoDB ļµ Document Oriented Storage: Data is stored in the form of JSON style documents. ļµ Index on any attribute ļµ Geo Location support ļµ Replication and high availability ļµ Auto-sharding ļµ Rich queries ļµ Fast in-place updates ļµ Professional support by MongoDB 7/28/2016Pawan Tiwari
- 6. MongoDB Overview ļµ Database ļµ Physical Container of Collection ļµ Collections ļµ Collection is a group of MongoDB documents ļµ equivalent of an RDBMS table ļµ Collections do not enforce a schema. ļµ Document ļµ set of key-value pairs. ļµ Documents have dynamic schema 7/28/2016Pawan Tiwari
- 7. RDBMS and MongoDB ļµ Database ļØ Database ļµ Table ļØ Collection ļµ Row ļØ Document ļµ Column ļØ Field 7/28/2016Pawan Tiwari
- 8. Sample Document { _id: ObjectId(7df78ad8902c) a: ā1ā, b: ā2ā } 7/28/2016Pawan Tiwari
- 9. Advantages of MongoDB ļµ Schema less ļµ Structure of a single object is clear. ļµ No complex joins. ļµ Supports dynamic queries on documents using a document-based query language that's nearly as powerful as SQL. ļµ Tuning. ļµ Ease of scale-out: MongoDB is easy to scale. ļµ Conversion/mapping of application objects to database objects not needed. ļµ Uses internal memory for storing the (windowed) working set, enabling faster access of data 7/28/2016Pawan Tiwari
- 10. Create Collection ļµ Db.createcollection(ācollection_nameā Options) ļµ Example: MongoDB shell version: 2.4.14 connecting to: test > show dbs local 0.078125GB test 0.203125GB > use test switched to db test > db.createCollection("test_collection") { "ok" : 1 } > 7/28/2016Pawan Tiwari
- 11. Drop Collection ļµ db.COLLECTION_NAME.drop() MongoDB shell version: 2.4.14 connecting to: test > show collections system.indexes test_collection > db.test_collection.drop() true 7/28/2016Pawan Tiwari
- 12. Insert Document ļµ db.COLLECTION_NAME.insert(document) >db.test_collection.insert({ title: 'MongoDB Webinar', description: 'MongoDB is a high-performance, open source, schema- free, document/object-oriented database optimized for web application environments, and is perhaps one of the most disruptive software technologies in years. MongoDB will fundamentally change the way participants think about data persistence. In this webinar know the fundamentals of designing and building applications using MongoDB', by: 'SpringPeople', url: 'http://www.springpeople.com/webinars/mongodb-developer-fundamentals-and- basics', }) 7/28/2016Pawan Tiwari
- 13. Query Document ļµ db.COLLECTION_NAME.find(document) Example: >db.test_collection.find() >db.test_collection.find().pretty() >db.test_collection.find({"title" : "MongoDB Webinar"}) > db.test_collection.find({"title" : "MongoDB Webinar"},{"by":1}).pretty() { "_id" : ObjectId("5791d58760a74da5b3e51eb9"), "by" : "SpringPeople" } > db.test_collection.find({"title" : "MongoDB Webinar"},{"by":1,_id:0}).pretty() { "by" : "SpringPeople" } 7/28/2016Pawan Tiwari
- 14. SQL vs Mongodb SQL SELECT Statements MongoDB find() Statements SELECT * FROM users db.users.find() SELECT id, user_id, status FROM users db.users.find( { }, { user_id: 1, status: 1 } ) SELECT user_id, status FROM users db.users.find( { }, { user_id: 1, status: 1, _id: 0 } ) SELECT * FROM users WHERE status = "A" db.users.find( { status: "A" } ) SELECT user_id, status FROM users WHERE status = "A" db.users.find( { status: "A" }, { user_id: 1, status: 1, _id: 0 } ) SELECT * FROM users WHERE status != "A" db.users.find( { status: { $ne: "A" } } ) SELECT * FROM users WHERE status = "A" AND age = 50 db.users.find( { status: "A", age: 50 } ) SELECT * FROM users WHERE status = "A" OR age = 50 db.users.find( { $or: [ { status: "A" } , { age: 50 } ] } ) SELECT * FROM users WHERE age > 25 db.users.find( { age: { $gt: 25 } } ) 7/28/2016Pawan Tiwari
- 15. SQL vs Mongodb 7/28/2016Pawan Tiwari SELECT * FROM users WHERE age < 25 db.users.find( { age: { $lt: 25 } } ) SELECT * FROM users WHERE age > 25 AND age <= 50 db.users.find( { age: { $gt: 25, $lte: 50 } } ) SELECT * FROM users WHERE user_id like "%bc%" db.users.find( { user_id: /bc/ } ) SELECT * FROM users WHERE user_id like "bc%" db.users.find( { user_id: /^bc/ } ) SELECT * FROM users WHERE status = "A" ORDER BY user_id ASC db.users.find( { status: "A" } ).sort( { user_id: 1 } ) SELECT * FROM users WHERE status = "A" ORDER BY user_id DESC db.users.find( { status: "A" } ).sort( { user_id: -1 } ) SELECT COUNT(*) FROM users db.users.count() or db.users.find().count() SELECT COUNT(user_id) FROM users db.users.count( { user_id: { $exists: true } } ) or db.users.find( { user_id: { $exists: true } } ).count()
- 16. Usefull MongoDB commands 7/28/2016Pawan Tiwari ļµ Db.createcollection(users) ļµ Db.users.insert({ānameā: āXYZā}) ļµ db.users.createIndex( { user_id: 1 } ) ļµ db.users.update( { age: { $gt: 25 } }, { $set: { status: "C" } }, { multi: true } ) ļµ db.users.remove( { status: "D" } ) db.users.remove( { status:"D" } )
- 18. [email protected] Upcoming Mongo DB Classes at SpringPeople Classroom (Bengaluru) 16 - 18 Sept Online LIVE 08 - 17 Aug