Monthly Archives: July 2018

Drop collection from database in mongoDB db.collection.drop() is used to drop a collection from the database. Syntax: db.collection.drop() use TEST show collections     <——— check the available collections into your database TEST. db.student.drop()    <——– Check and verify the student collection has been drop from TEST Database.     Drop Database in mongoDB db.dropDatabase() command […]

CRUD operations create, read, update, and delete documents as same like in RDBMS (Select and DMLs).   Firstly knows how to create database in mongoDB MongoDB use DATABASE_NAME is used to create database. The command will create a new database if it doesn’t exist, otherwise it will return the existing database. Execute simple command : […]

Database 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. Collection A grouping of MongoDB documents. A collection is the equivalent of an RDBMS table. A collection exists within a single database. Collections do not enforce a […]

MongoDB Provide two types of software. Community Edition :   Its For freeware no mongo support available on this. Enterprise Edition : Its License Based. For More Detail about Installation and Packages and Environment Support : Click Here For any query regarding MongoDB installation/Upgrade feel free contact to Oracle-Help Team.  

The MongoDB data bases on the JSON (Java Script Object Notation) format. JSON allows for the transfer of data between web applications and servers using a human readable format. Before JSON, XML was used for this. JSON is defined in MongoDB’s BSON (Binary JSON). The binary format of BSON provides reliability and greater efficiency when […]

MongoDB works on concept of collection and document.   RDBMS MongoDB Database Database Table Collection Tuple/Row Document column Field Table Join Embedded Documents Primary Key Primary Key (Default key _id provided by mongodb itself)   Database Server and Client Mysqld/Oracle mongod mysql/sqlplus mongo

MongoDB is open source database system. It’s a document database with the scalability and flexibility that you want with the querying and indexing that you need. Its support to Dyanmic schema, using a map-reduce, GeoSpatial support the main feature. MongoDB stores data in flexible, JSON-like documents, meaning fields can vary from document to document and […]