Entity Relationship The Entity Relationship or E R is a model which deals with real world entities it includes a set of objects and the relationships among them Entity is an object that exists and is easily distinguishable from others Like people they can easily be distinguished from others through various methods; for instance you can distinguish...
What is a Concept Oriented Model Concept oriented model is proclaimed to be the next level in data modeling The method is based upon the assumption that data aspects are living concepts where each is a combination of a number of super concepts The belief goes on to complement the top concept and the bottom concept structures This particular...
What is the Object Relational Model The object relational model is designed to provide a relational database management that allows developers to integrate databases with their data types and methods It is essentially a relational model that allows users to integrate object oriented features into it This design is most recently shown in the...
What is the Object Model The Object model also referred to as the object oriented model was designed to add database functionality to object programming languages Object models help to extend the semantics of C which are Smalltalk and Java object programming languages used to provide full featured database programming capability all the...
What is the Associative Data Model The Associative data model is a model for databases unlike any of those we spoke of in prior articles Unlike the relational model which is record based and deals with entities and attributes this model works with entities that have a discreet independent existence and their relationships are modeled as associations The...
What is a Hierarchical Model The term Hierarchical Model  covers a broad concept spectrum It often refers to a lot of set ups like Multi Level models where there are various levels of information or data all related be some larger form The Hierarchical model is similar to the Network model; it displays a collection of records in trees rather...
What is a Multi dimensional Model Multi dimensional  model is an integral aspect of the On line Analytical Processing which  also  known as OLAP Due to the fact that OLAP is online it provides information quickly iterative queries are often posed during interactive sessions Due to the analytical nature of OLAP the queries are often...
What is a Network Model Oddly enough the Network model was designed to do what the Hierarchical model could not Though both show how data is related the Network model allows for data to not only have many children but also many parents where as the Hierarchical model allowed for only one parent with many children With the Network model data relationships...
What is a Relational Model The Relational Model is a clean and simple model that uses the concept of a relation using a table rather then a graph or shapes The information is put into a grid like structure that consists of columns running up and down and rows that run from left to right this is where information can be categorized and sorted The...
What is the Semi Structured Data Model The semi structured data model is a data model where the information that would normal be connected to a schema is instead contained within the data this is often referred to as self describing model With this type of database there is no clear separation between the data and the schema also the level...
What is the Star Schema The Star Schema is basically the simplest form of a data warehouse This schema is made up of fact tables and dimension table We have covered dimension tables in previous articles but the concept of fact tables is fairly new A fact table contains measurable or factual data about an organization The information contained...
What is an XML database The XML database is most commonly described as a data persistence system that enables data to be accessed exported and imported XML stands for Extensible Markup Language The XML database is a Meta markup language that was developed by W3C to handle the inadequacies of HTML The HTML language began to evolve quickly as...