Whois & Analysis for ravendb.net

A NoSQL (originally referring to "non SQL", "non relational" or "not only SQL") database provides a mechanism for storage and retrieval of data which is modeled in means other than the tabular relations used in relational databases.

Such databases have existed since the late 1960s, but did not obtain the "NoSQL" moniker until a surge of popularity in the early twenty-first century, triggered by the needs of Web 2.0 companies such as Facebook, Google, and Amazon.com.

NoSQL databases are increasingly used in big data and real-time web applications.

NoSQL systems are also sometimes called "Not only SQL" to emphasize that they may support SQL-like query languages.

A document-oriented database, or document store, is a computer program designed for storing, retrieving and managing document-oriented information, also known as semi-structured data.

Document-oriented databases are one of the main categories of NoSQL databases, and the popularity of the term "document-oriented database" has grown with the use of the term NoSQL itself.

XML databases are a subclass of document-oriented databases that are optimized to work with XML documents.

Graph databases are similar, but add another layer, the relationship, which allows them to link documents for rapid traversal.

In computer science, ACID (Atomicity, Consistency, Isolation, Durability) is a set of properties of database transactions.

In the context of databases, a sequence of database operations that satisfies the ACID properties and, thus, can be perceived as single logical operation on the data is called a transaction.

For example, a transfer of funds from one bank account to another, even involving multiple changes such as debiting one account and crediting another, is a single transaction.

A transaction symbolizes a unit of work performed within a database management system (or similar system) against a database, and treated in a coherent and reliable way independent of other transactions.

A transaction generally represents any change in database.

Transactions in a database environment have two main purposes: