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Showing posts with label
DBMS
.
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Showing posts with label
DBMS
.
Show all posts
Wednesday, 20 April 2022
ER [Entity–relationship] Model
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ER Model is a popular high-level (conceptual) data model. It is an approach to designing Semantic Conceptual schema of a Database. ER model ...
Data Model
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Data Model is a collection of concepts that can be used to describe the structure of the database. Structure means data types, relationships...
Database Schema
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Description of a database is called as database Schema. Three-Schema Architecture: A database can be described using three different levels ...
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