Conceptual model, Think of the conceptual model as an architect’s conceptual drawing of a house. It provides a good idea of what is required with very little additional detail; Data modelling is a technique for defining business requirements for a database. It is sometimes called database modelling because a data model is eventually implemented in a database

1. DBMS
Zaheer uddin soomro
Data Modeling

2. Data Model
 Graphical documentation of Data
requirement is called data model.
 It is used to confirm understanding of
data requirement
 A data model is a graphical means of
documenting data requirements and
defining database design specifications.

3. Types of data model
 Conceptual model,
◦ Think of the conceptual model as an architect’s conceptual drawing
of a house. It provides a good idea of what is required with very
little additional detail;
 Enterprise data model /Global Business Model
◦ Enterprise Data Modeling is the practice of creating a
graphical model of the data used by an enterprise or company.
 Logical model,
◦ detailed representation of some or all of an organization's data;
 Dimensional Model,
◦ techniques and concepts used in data warehouse design.
◦ dimensions are groups of hierarchies and descriptors that define
the facts. For example, sales amount is a fact; timestamp, product,
register#, store#, etc. are elements of dimensions
 Physical Model,
◦ is the final representation of the data base structures that will be
generated from the model. It contains the detailed specifications
for the database design and, in a model driven environment, the
modeling tool will generate the data definition language (DDL) that
is used to create the database structure.

4. If Any Question
Thanks
zaheeruddinmscs@gmail.com