There is three default database in MongoDB. 1. local database used for storing metadata for that node where MongoDB installed, this DB will not be part of replication, 2. admin database used for authentication, authorization, and administrative purpose, 3. config database used for storing of metadata for sharding.
A collection in MongoDB is a group of documents. Collection is similar to Table in SQL relational database. Collection in MongoDB is a basic building block, which holds the same group of documents.
MongoDB is a document-oriented database. A document is a basic unit or basic building block of data for MongoDB. Here, a document refers to a group of data in a row/record similar to a row/record in a relational database.
MongoDB features are: for High scalability, High Availability, Schema free, Indexing, Aggregation Framework, Ad-hoc query, File Storage, BSON format, Capped Collection, Strong Active community, Commercial & Community support, Support of client Drivers, and Admin utility tools.
What is MongoDB security? This post is about the frequently asked questions about MongoDB Security, which is ACL (Access Control Layer). What are the different Authorization and Authentication are available in MongoDB security.
How to connect MongoDB in java programming language is simple by using MongoDB driver. You need to provide a List of IP(s) in replication or in standalone you have to provide IP or domain or machine name along with the port on which you listen mongod service.
How to convert MongoDB ObjectId to Timestamp and timestamp to MongoDB ObjectId. This usually used by the admin in their day-to-day admin tasks.
How To configure Vagrant and VirtualBox on Windows for MongoDB Security example. This is very simple by following a few steps and you are done with setup.