Data Model is a logical map that represents the inherent properties of the data independent of software hardware or machine performance considerations. The model shows data elements grouped into records as well as the association around those records. Since the data model is the basis for data implementation regardless of software or hardware platforms...

Data Modeling is a method used to define and analyze data requirements needed to support the business functions of an enterprise. These data requirements are recorded as a conceptual data model with associated data definitions. Data modeling defines the relationships between data elements and structures. Data modeling can be used for a wide array of...

This data model represents events entities and objects in the real world that are of interest to the company. It is subject oriented and includes all aspects of the real world primarily activities pertaining to the business. To use lay terms a data model can be considered a road map to get one employee from point A to point B in the least mileage...

Common Data Modeling is defining the unifying the structure used in allowing heterogeneous business environments to interoperate. A Common Data Model is very critical to a business organization. Especially with today s business environment where it is common to have multiple applications a Common Data Model seamless integrates seemingly unrelated...

Common Data Modeling is one of the core considerations when setting up a business data warehouse. Any serious company wanting to have a data warehouse will have to be first serious about data models. Building a data model takes time and it is not unusual for companies to spend two to five years just doing it. Data Models should reflect practical...

Entity Relation Diagram which is also known as an E-R diagram is a data relation diagram.  The entity relation diagram uses specialized graphical symbols for illustrating all of the interrelationships between entities and attributes in the database.  It represents the arrangement and relationship of data entities for the logical data...

An entity structure chart is a visual representation of everything related to the entities related to the business rules activities as well as the data model for the company in its database data warehouse or any general information system implementation.  It is a chart that depicts the structure and existence of data attributes and data entities...

The word schema as defined in the dictionary means plan diagram scheme or an underlying organizational structure. Therefore as can be very briefly said an external schema is a plan on how to structure data so it can seamlessly integrates with any information system that needs it. It also means that data needs to integrate with the business schema...

Four-Schema Concept Four-Schema concept consist of a physical schema a logical schema a data view schema and a business schema. The use of the four schema concept is greatly taken advantaged of the in the implementation of a service oriented business processes integration. It helps to resolve problems with 3-schema...

A logical data model is an important aspect in the design and implementation of a data warehouse in that the efficiency of the databases depends heavily on data models. Logical Data Model refers to the actual implementation of a conceptual module in a database. It represents normalized design of common data model which is required to support the...