Types of Databases
FAQs
What are the three main types of database?
There are three different types of databases: hierarchical, relational, and non-relational. Others include the object oriented database, personal database, and centralized database.
How is MongoDB different from other types of database?
MongoDB is a NoSQL distributed database that stores data as BSON documents. BSON is a binary representation of JSON (JavaScript Object Notation). The document model grants it the ability to store data that adheres to a user-defined format while being flexible enough to evolve as an application’s needs change.
How many different types of relationships exist in database designing?
Data can have one of three different types of relationships: one-to-one, where one record matches another record; one-to-many, where one record can match with any number of other records; and many-to-many, where more than one record can have relationships with each other.
What is the most popular type of database used today?
Relational databases are more common among the different types of databases. However, the popularity of the non-relational database is on the rise. The type of database you choose depends on your needs and goals.
What type of consistency do relational databases provide?
They typically provide strong consistency, also known as immediate consistency. Non-relational typically provides eventual consistency.
What are the four most common types of NoSQL databases?
The four categories are key-value databases, document databases, wide-column stores, and graph databases.
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