1. PB204 Jabatan Perdagangan POLITEKNIK SEBERANG PERAI DATABASEAPPLICATION 2. DATA MODELLING2.0 3. Entity Relationship Diagram What is Entity? “ An entity is a business…

1. 2. Entity Relationship(ER) Model DATABASE MANAGEMENT SYSTEMS 2. THE RELATİON MODEL Relational databases are based on the relational model of data. Code defined the term‘data…

Conversion of E-R Diagram to Tables • For each entity set and relationship set there is a unique table, which is assigned the name of the corresponding entity set or relationship…

Entity-Relationship Model Entity sets • A database can be modeled as:  a collection of entities,  relationship among entities. • Entity:-set of attributes  Eg:-…

1. diagram .Ms.V. Saranya AP/CSE Sri vidya college of Engg & Tech, Virudhunagar. 2. Objectives • To illustrate how relationships between entities are defined and refined.…

1. Data and Functional ModelingSaranya.V AP/CSE, Sri Vidya College of Engineering & Technology,Virudhunagar 2. Introduction• Data Modeling in software Engineering is…

1. 1The Entity-Relationship ModelTo Relational ModelSummary of Conceptual Design•Conceptual designfollows requirements analysis,–Yields a high-level description of data…

Slide 1Database Management Systems, hyunja Lee1 The Entity-Relationship Model Chapter 2 Slide 2 Database Management Systems, hyunja Lee2 Overview of Database Design Miniworld…

Slide 1Convert ER to Relational Database Entity relation Entity relation Attributes attributes Attributes attributes Primary key primary key Primary key primary key Relationship…

Slide 1Logical DB Design: ER to Relational Entity sets to tables. Employees ssn name lot CREATE TABLE Employees (ssn CHAR (11), name CHAR (20), lot INTEGER, PRIMARY KEY (ssn))…