Database System Concepts – Data Model, Schemas and Database state
Filed Under Data, Data Model, Databases, Instance, Model, Schemas, State, Types | Posted on August 4, 2009
A data model is a collection of concepts that can be used to describe the structure of a database. By structure of the database we mean the data types, relationships, and constraints that should hold on the data. Most data models also include a set of basic operations for specifying retrievals and updates on database. [...]
