Data Model

DATA MODEL What is Data Model?.  Data Model can be defined as abstract model whose purpose is to describe how data can be used and represented effectively. A data model is a picture or description which shows how data are to be arranged to serve a specific purpose it determines the structure of data and the information is to be contained, how the information will be used and how items in database will be related to each other.   Types of data model Database model Data structure diagram Entity-relationship model Geographic data model Generic data model Semantic data model   Database Model: A database model is specification describing how a database is structured and used.   Types of Database Model Flat Model: This consists of a single two-dimensional array of data element where every member of column and row are assumed to be related to one table with fields to… Read More »DATA MODEL