Common DBMS (database management systems) Features and characteristics (ALLYSON) ,(RODRIGO)
By Rodrigo Flores

Historically Databases models were tree structured (hierarchical) and network due to its inadequacy they became obsolete and the third model known as relational model became widely used. (Codd, 1070) DBMS stands for Database Management System and is a software witch mainly operates on a server or a mainframe system to manage structured data, accept quires from users, and provide responses to those quires. A DBMS typically features a structure to store data as a record, as a table, or as an object. This system accepts data input from users and stores this for future retrieval of such. Another capability offered by this system is the provision of query languages for searching, sorting, responding, and even more ways to provide support for activities that make sense of collected data. This system is also important because it multiuser access to data, along with providing access to its users that prevents them from accessing and changing the same information at the same time. Finally DBMS provides a data structure also known as metadata that describes the structure of the database, related files, and record information.

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