this is a basic ppt on the basics of dbms for grade 10, it is simple and complete with a vaiety of animations.

1. DBMS
Submitted to- Yogesh Sir
Submitted by- Rehmat Kang
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2. OVERVIEW
• Introduction
• Database system
• Hardware
• Software
• Data
• Users
• Review
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3. • Data
– Raw fact and figures
– Example
• Name, Roll number, invoice no
• Information
– Processed or more useful form of data
– It helps in decision making process
– Example
• Time Table, Merit List, Report Card, Marks
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4. Data and Information
• Difference between Data and Information
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5. • Database
– The related information when placed in an
organized form makes a database
– Unorganized information has no meaning
– Example
• Dictionary
• Telephone directory
• Address book
What is database?
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6. What is database?
• Database
– The related information when placed in an
organized form makes a database
– Unorganized information has no meaning
– Example
• Dictionary
• Telephone directory
• Address book
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7. OPERATIONS IN DATABASE
• Insertion : to add new information.
e.g. to insert new address in address book.
• Updation : to modify or edit the existing information.
e.g. your friend has shifted a new place so his address would get
changed.
• Deletion : to remove or delete unwanted information
e.g. delete unwanted contacts in your mobile phones
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8. • retrieval operation : to view or retrieve the stored
information.
e.g. you have to find address of one of your old friend
“abcd”
• Sort operation: arranging the information in a desired
ascending or descending order etc.
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9. TABLES
• Tables : tables are a logical group of columns,
they are the building blocks of a database.
• Columns : columns are similar to fields that is
individuals items of data that we wish to store.
• Rows : rows are similar to records as they
contain data of multiple columns.
• Cell : cell is the intersection of rows and
columns
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10. 10
Teacher_id First
name
Last
name
Dept. classes
001 Yogesh Kapoor Computer 8-10
002 Sharan Kaur english 8-10
003 Sanjay Kumar History 7-10
004 vineeta Malhotra Biology 9-10
005 mohit Dey Physics 9-10
006 tushar Gupta Civics 7-10
007 kreeti nanda maths 8-10

11. Characteristics of database
• Organized/related
• Shared
• Permanent or persistence
• Validity/integrity/correctness
• Security
• Consistency
• Non-redundancy
• Independence
• Easily accessible
• Recoverable
• Flexible to change
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12. Features of a dbms
• Data classification- to categorize data on
the basis of some conditions
• Data sorting- arrangement of data in
proper order
• Reducing redundancy- helps controlling
duplication of data
• Data summarization- to get synopsis of
data on some criteria
• Concurrency control-allows multiple
transactions without violating data integrity12

13. Database system
• Definition
– DBMS “System that allow users to define,
create and maintain a database and provides
controlled access to the data.”
– enable user to store, modify and extract
information as per the requirement
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14. • Example
– Computerized Library System
– ATM
– Flight reservation system
– Railway reservation system etc.
• DBMS in market
– Dbase, Foxpro, IMS and Oracle
Database system
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15. • Components of DBMS Environment
– Hardware
– Software
– Data
– Users
– Procedures
Database system
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16. Hardware
• Computer System
• Storage devices
• Input / Output devices
• DB work on micro computer to large
mainframe
• Hardware issues
– Designed system
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17. Software
• Software is actual DBMS
• b/w physical data and users
• Requests handled by DBMS
• Provide simple interface
• Mediator b/w database and user
• Utilities(Report writers, application development, design aids
etc)
• Example
– MS Access, Oracle an IBM DB2
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18. Data
• Most important component of DBMS
• Bridge between Machine and User
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19. Users
• Different users can access data
• Depending on their degree of expertise
users are classified in the following groups
– Naïve Users (ATM user)
– Online Users
– Application Programmers
– Sophisticated Users
– DBA
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20. Advantages of DBMS
•Controlling redundancy
•Integrity can be enforced
•Inconsistency can be avoided
•Data can be shared
•Standards can be enforced
•Restricting unauthorized access 20

21. • Solving enterprise requirement than individual
requirement
• Providing backup and recovery
• Cost of developing and maintaining system is lower
• Data model can be developed
• Concurrency control
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22. Disadvantages of DBMS
• Complexity
• Size
• Performance
• Higher impact of a failure
• Cost of DBMS
• Additional hardware costs
• Cost of conversion
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23. Comparison of file management system with
database management system
File management
• Small system
• Relatively cheep
• Simple structure
• Redundant data
• Chances of inconsistency
• No security
• Isolated data
• Often single user
DBMS
• Large systems
• Expensive
• Complex structure
• Reduced redundancy
• Consistent
• Security
• Data can be shared
• Multiple users
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