Dedicated offshore MongoDB developer
MongoDB is a document-oriented NoSQL database used for a large amount of data storage. It was created by Eliot and Dwight in 2007. Classified as a NoSQL database program, MongoDB uses JSON-like documents with schemas.MongoDB is a document database. Each database contains collections which in turn contains documents. Each document can be different with varying number of fields. The size and content of each document can be different from each other.
MongoDB stores data as documents in a binary representation called binary JSON.The BSON encoding extends the popular JSON representation to include additional types such as int, long, date, and floating point. Documents that tend to share a similar structure areorganized as collections.
In MongoDB the data could be modeled as two collections,one for users, and the other for articles. In each blog document there might be multiple comments, multiple tags, and multiple categories, each expressed as an embedded array.MongoDB provides native drivers for all popular programming languages and frameworks to make development natural. Supported drivers include Java, .NET,Ruby, PHP, JavaScript, node.js, Python, Perl, PHP, Scala,...
Some of the common terms in MongoDB are
_id:
The _id field is like the document's primary key. The _id field represents a unique value in the MongoDB document.
Collection:
A collection is the equivalent of a table which is created in any other RDMS such as Oracle or MS SQL. A collection exists within a single database.
Cursor:
It is a pointer to the result set of a query. Clients can iterate through a cursor to retrieve results.
Database:
Each database gets its own set of files on the file system. A MongoDB server can store multiple databases.
Document:
A record in a MongoDB collection is basically called a document. The document consists of field name and values.
Field:
A document has zero or more fields. Fields are analogous to columns in relational databases.It is a name value pair in a document.
JSON:
JavaScript object notation is a human-readable, plain text format for expressing structured data.
The features which make the MongoDB popular are
1.indexing
2.Replication
3.Aggregation
4.High performance
5.Ad hoc Queries support
6.Load balancing
7.Large media storage
8.Horizontal scalability
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