1. DATA BASE CONCEPTS:
A RELATIONAL APPROACH
DATABASE AN INTRODUCTION:
A database is an electronic store of
the data. It is a repository that stores
information about different thing.
2. DATABASE MANAGEMENT
SYSTEM(DBMS):
A database management system(DBMS) software
package such microsoft Access visual fox pro
microsoft SQL-Server, or oracle
Software-an operating system and a network operating
system
Personal-a database administrator,a database
designer/analyst a programmer.
3. RELATION
THE data base design requires you to create entity sets
each describing a set of related entities.
ONE TO ONE RELATION
ONE TO MANY RELATION
MANY TO MANY RELATION
4. THE RELATION DATABASE MODEL
PROJNO LOC Customer
1 miami Strocks
3 trenton Smith
5 phoenix Robins
6 edison Shaw
57 seattle Douglas
PROJ2002
6. INTEGRITY RULES
In any database managed by an RDBMS, it is very
important that the data in the underlying tables be
consistent.
ENITY INTEGRITY
REFERENTIAL INTEGRITY
