Conceptual database modeling - Confused about Conceptual, Logical and Physical Database Designing?
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Conceptual Database Modeling By: Suresh Khanal For: http://mcqSets.com
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http://mcqSets.com - Conceptual Database Modeling Many students kept asking about Conceptual, Logical and Physical databases. They are making mistakes on MCQs when it is asked from this aspect of database. In this post, I list the different phases of database and system development life cycle and further go on to introduce the concept of Conceptual Database Modeling. Please visit http://mcqsets.com/s/dbms-s/conceptual-database-model/ for the text and description about this presentation.
Transcript of Conceptual database modeling - Confused about Conceptual, Logical and Physical Database Designing?
Why Conceptual?Free from unnecessary and technical details
such as field size, field type, constraints.Easy to communicate idea between end users
and development team.Suitable to depict the organization and
concept on a whole
What is conceptual database?A conceptual data model is a summary-level data model that is most often used on strategic data projects.
In simple words, it is the most simple representation of database you are going to develop.
It typically describes an entire enterprise. Due to its highly abstract nature, it may be referred to as a conceptual model.
Features of Conceptual Database Conceptual database are independent of
DBMS.They are free from the technical details such
as the field size, field types, constraints and so on.
Allows for easy communication between end-users and developers.
Has a clear method to convert from high-level model to relational model.
Conceptual schema is a permanent description of the database requirements.
