NoSQL databases disrupted the orderly world of relational database management systems (RDBMS). These databases offered tremendous scope for scaling, economy and flexibility, compared to the rigidity of RDBMSs. However, in a world overflowing with data, both have their place. This article will point you in the right direction when it comes to a choice.
In the planet of database technology, there are two main types of databases: SQL and NoSQL—or, relational databases and non-relational databases. The differences are mainly in how they’re built, the type of information they store and how they store it. Relational databases are structured like phone books that store phone numbers and addresses. Nonrelational databases are document-oriented and distributed, like file folders that hold everything from a person’s address and phone number to their Facebook likes and online shopping preferences. We call them SQL and NoSQL.
The rise of RDBMSs
In 1970, E.F. Codd envisioned a new model of DBMS through his paper titled, ‘A Relational Model of Data for Large Shared Data Banks’, which paved the way for the emergence of relational DBMSs (RDBMSs).
-- RDBMSs formulated a new methodology for storing data and processing large databases.
-- The records (data) would be stored in ‘tables’ with fixed-length records, unlike the free-form list of linked records in an IDS (Integrated Data Store) and IMS (Information Management System).
-- Later, databases like Ingres, and a query language like SQL evolved. The nuances and benefits of RDBMSs had a wide impact, resulting in buy-in from different vendors and setting the stage for an era of the database wars.
Many RDBMSs such as Sybase, Microsoft SQL Server, Informix, MySQL, DB2 and Oracle got launched around the same time, each claiming to be better in terms of:
-- Performance
-- Availability
-- Functionalities
-- Cost of storage
-- Economy of usage
With no competition, RDBMSs got completely entrenched in the IT ecosystem by the early 2000s.
The evolution of NoSQL
This story is from the March 2018 edition of Open Source For You.
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This story is from the March 2018 edition of Open Source For You.
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