Is the collection a database?
A collection exists within a single database. Collections do not enforce a schema. Documents within a collection can have different fields. Generally, all the documents in a collection have a similar or related purpose.
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What is collection in MongoDB?
A collection is a grouping of MongoDB documents. Documents within a collection can have different fields. A collection is the equivalent of a table in a relational database system. A collection exists within a single database.
How are collections in document databases analogous to tables in relational databases?
Collections are analogous to tables in a relational database. Each collection contains documents that can be nested in complex hierarchies and still support efficient query and index implementations. A document is a set of fields, each of which is a key-value pair.
What is a MongoDB collection?
A document is a representation of a single data entity in the MongoDB database. A collection consists of one or more related objects. There is a big difference between MongoDB and SQL, in that documents are different from rows. Row data is flat, with one column for each value in the row.
Is MongoDB a collection?
MongoDB stores data records as documents (specifically BSON documents) that are gathered into collections. A database stores one or more collections of documents.
How many collections can MongoDB have?
In general, we recommend limiting collections to 10,000 per replica set. When users start to exceed 10,000 collections, they typically see a drop in performance. To avoid this anti-pattern, examine your database and remove unnecessary collections.
How do I create MongoDB?
Creation of a database. To create a database in MongoDB, start by creating a MongoClient object, then specify a connection URL with the correct IP address and name of the database you want to create. MongoDB will create the database if it doesn’t exist and establish a connection to it.
What is DB in MongoDB?
MongoDB is an open source database management system (DBMS) that uses a document-oriented database model that supports various forms of data.
What is the history of MongoDB?
History of MongoDB The initial development of MongoDB began in 2007 when the company was building a platform as a service similar to Window Azure. Window Azure is a cloud computing infrastructure and platform, created by Microsoft, for building, deploying, and managing applications and services over a global network.
What is the MongoDB documentation?
A record in MongoDB is a document, which is a data structure made up of field-value pairs. The field values can include other documents, arrays, and document arrays (a document group is a collection, like a table in RDBMS).