Learn everything you need to know about NoSQL database, how is it used, what are its benefits and how does it compare to other databases
Key-value databases are some of the least complex NoSQL databases, as all their data consists of an indexed key and a value. They use a hashing mechanism such that given a key, the database can quickly retrieve an associated value. Hashing mechanisms provide constant time access, which means...
A NoSQL database, short for “not only SQL (Structured Query Language),” is a non-relational database designed to handle diverse and flexible data structures. The NoSQL definition refers to databases that support multiple models—including document, graph, key-value, wide-column, and vector s...
Structured query language (SQL) is commonly referenced in relation to NoSQL. To better understand the difference between NoSQL and SQL, it may help to understand the history of SQL, a programming language used for retrieving specific information from a database. Before relational databases, comp...
However, NoSQL databases can be queried using idiomatic language APIs, declarative structured query languages, and query-by example languages, which is why they are also referred to as “not only SQL” databases. Learn about NoSQL Cloud What Is a NoSQL Database Used for? NoSQL databases ...
There are some major types of NoSQL databases you can learn about. Key-Value Databases A key-value database is a type of non-relational database that uses a simple key-value method to store data, containing a simple string that is always unique and an arbitrary large data field. ...
These basic NoSQL database classifications are only guides. Over time, vendors have mixed and matched elements from different NoSQL database families to achieve more generally useful systems. That evolution is seen, for example, in MarkLogic from Progress Software, which added a graph store and ...
Databases come in many forms, including relational database management systems (RDBMS) like MySQL and PostgreSQL, as well as NoSQL databases such as MongoDB and Cassandra. While the components outlined below are common to most database systems, specific implementations may vary depending on the dat...
Object-oriented database model Object-relational model Entity-relationship model Other database models NoSQL database models Databases on the Web Types of database models There are many kinds of data models. Some of the most common ones include: ...
SQL vs. NoSQL databases differences SQL Database Definition SQL database or relational database is a collection of highly structured tables, wherein each row reflects a data entity, and every column defines a specific information field. Relational databases are built using the structured query langu...