Skip to main content

Relational database model

Relational database model
• A relation Database is a collection of relation or Row dimensional tables
• E F Codd proposed the relation model for database system in 1970.
• It is the basis for the relation database management system(RDBMS)

It Consists of following
• Collection of an objects and relation.
• Set of operators to act on the relations.
• Data Integrity for accuracy and consistency

RDBMS
• Data is stored in form of table.
• A relation database can also contain other database object like views, indexes,
stored, procedures, functions, and triggers apart from the table.

Database Management System:
• A database Management system is a set of programs in an
OS that creates and maintains database.
• Allows user to store and retrieves information from the database.
• Provides an interface for the user to interact with database.

Ex: Oracle Log: G stands for grid, Oracle log support grid computing

RDBMS Application

Some popular RDBMS Application
• MySQL
• SQL Server

  • When I originally commented I clicked the “Notify me when new comments are added”
    checkbox and now each time a comment is added I get three emails with the same comment.
    Is there any way you can remove me from that service? Thanks!