Editing Database server (section)

== History ==
The foundations for modeling large sets of data were first introduced by [[Charles Bachman]] in 1969.<ref name="dbhist">{{Cite web |url=http://knol.google.com/k/databases-history-early-development |title=Databases - History & Early Development |access-date=2016-07-08 |archive-url=https://web.archive.org/web/20120420063339/http://knol.google.com/k/databases-history-early-development |archive-date=2012-04-20 |url-status=dead }}</ref> Bachman introduced [[Data structure diagram|Data Structure Diagrams (DSDs)]] as a means to graphically represent data. DSDs provided a means to represent the relationships between different data entities. In 1970, [[Edgar F. Codd|Codd]] introduced the concept that users of a database should be ignorant of the "inner workings" of the database.<ref name="dbhist"/> Codd proposed the "relational view" of data which later evolved into the [[Relational Model]] which most databases use today. In 1971, the Database Task Report Group of [[CODASYL]] (the driving force behind the development of the programming language [[COBOL]]) first proposed a "data description language for describing a database, a data description language for describing that part of the data base known to a program, and a data manipulation language."<ref name="dbhist"/> Most of the research and development of databases focused on the relational model during the 1970s.

In 1975, Bachman demonstrated how the relational model and the data structure set were similar and "congruent" ways of structuring data while working for [[Honeywell]].<ref name="dbhist"/> The [[entity–relationship model]] was first proposed in its current form by [[Peter Chen]] in 1976 while he was conducting research at [[MIT]].<ref>[http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.123.1085 The Entity-Relationship Model: Toward a Unified View of Data (1976)]</ref> This model became the most frequently used model to describe relational databases. Chen was able to propose a model that was superior to the navigational model and was more applicable to the "real world" than the relational model proposed by Codd.<ref name="dbhist"/>