power point presentation of DBMS data base management system

2.  History and evolution of database
 What is database ? And why ?
 DBMS
 Advantages of database
 Parts of a DBMS system
 Level of abstraction in a DBMS
 Data model
 Relational model
 Introduction to Microsoft access 2010

3.  Record keeping systems
had been employed for
thousands and thousands
of years in the form of
notations on clay tablets,
palm leaves, timber, bone
etc.
 The conversation from
a manual file system to
a matching computer
file system could be
technically was done
initially by data
processing specialists.

4. A DATABASE is a collection of
data, typically describing the activities of one
or more related organization.
For Example : A school database might
contain information about student, faculty,
courses and classrooms.

5.  To manage vast amount of data
 To quickly find the information that is relevant
to given question
 For storage and analyze of our data

6. A DATABASE
MANAGEMENT
SYSTEM is a computer-
based system to manage a
database or a collection of
databases or files.

7. Defining
constructing
manipulating
sharing
It is a general purpose software system
that facilitates the process of …….

9.  Data independence.
 Efficient data access.
 Data integrity and security.
 Data administration.
 Concurrent access and crash recovery.
 Reduced application development time.

10.  DATA :
Data are the collection of facts stored in
database . Processed data is called INFORMATION.

11.  HARDWARE :
The physical
components of a system are
referred to as hardware.
For Example : computer, printer
modems, keyboards.

12.  SOFTWARE :
Software means the collection
of programs; instructions that make the
hardware work.
operating system software
mainly used by microcomputers – DOS, OS/2
and Windows 2000 etc.

13.  PEOPLE:
In which include all user of
database system. They can classified
on the based of their job function.
 PROCEDURE:
Procedure is instruction and
rules that governs the design and use
of the database system.

14. External
view
External
view
External
view
Conceptual level/schema
Physical level/schema
disk disk disk

15.  External data view :
Which describes the various
user views; data viewed by the payroll department,
accounting department, inventory department etc.
For Example:
faculty should not see billing or
payment data

16.  Conceptual data view :
Which describes the
structure and constraints for the whole database .
Present data as a set of tables and data access
between conceptual to physical schema is
performed automatically in DBMS.

17.  Physical data view :
It is also know as internal
schema. Which describe data storage structure and
access paths.
Where the database is physically stored.

18.  Entity-relationship model :
 Entities : are real word objects about which we
collect data,
 Attributes : Describe the entities,
 Relationships : Associates among entities,
 Entity set : Set of entities of same type, and
 Relationship set : Set of relationships of same type.

19. • Entity : An entity is any object, place, person and physical
object such as a car, an event such as a house or a car service
or a concept such as a customer transaction or order about
which an enterprise records data.
Category Examples
Physical object Employees, Machine, Book, Client, Student, Item.
Abstract object Account, Department.
Event Application, Reservation, Invoice, Contract.
Location Building, City, State.

20. • Attributes : Attributes are data elements that
describe an entity.
Entity Attributes
Customer Name, Address, Customer-city.
Branch Branch-Name, Branch-City, Branch-Region.
Employee Employee-Name, Employee-Number, Gross Pay.
Order Order Number, Order Date, Order Placed By.
Book ISBN, Title, Author, Price.
Number
Name
Gross
Pay
Employee

21. DATA Model
Relationship model :
A relationship is an
association among two or more entities.

22. E1 E2
E1
E1
E2
E2
One-to-Many
Many-to-Many
One-to-One
1:1
1:M
M:N
Degree of
Relationship

23. • Example of tabular data in the relational
model
customer-
name
Customer-
id
customer-
street
customer-
city
account-
number
dhaval
karan
deep
ishan
dhruvil
192-83-7465
019-28-3746
192-83-7465
321-12-3123
019-28-3746
JA-003
JU-07
AH-12
RA-24
SU-52
JAMNAGAR
JUNAGADH
AHMEDABAD
RAJKOT
SURAT
A-101
A-215
A-201
A-217
A-201
Fields
(Attributes)
Field Name Records