DETAILS ABOUT DATA ENTRY WITH DBMS AND RDMS

1. SUBMITTED BY:
AAYUSH VOHRA
DIPLOMA(M.E),R13ETDME001
A Project on
DBMS and RDBMS

2. DBMS
 DBMS is a software system that allow us to manage
the database.
 DATA BASE : It is a group of information or a
collection of data may be organized in the form of
files or tables.
 Examples: Oracle , SQL , Sybase etc.

3. Components of DBMS:
 User
 Hardware
 Software
 Data
Application of DBMS:
• Banking sector
• Universities
• Railway Reservation
• Finance
• Sales

4. Advantages of DBMS :
 Reduce the redundancy from database.
 Sharing of data
 Important in data security
 Better interaction with user
Disadvantages of DBMS :
• Cost of software
• Cost of hardware
• Complexity of back up of recovery

5. RDBMS
 RDBMS is a DBMS i.e. based on relational , model as
inroduce by Dr. Edgar Frank Codd
 Codds role for RDBMS :
 Dr. E.F. Codd is an IBM researcher who developed
relational data base in 1970.
 In 1905 Codd pulished some rules :
• The information rule
• Veiw updating rule
• Systematic treatment of NULL Values
• Non subversions rule
• Distribution data independence etc.

6. DBMS RDBMS
 DBMS store data as a file.
 In DBMS, data is generally stored either a
hierachical form or a navigational form
 Normalization is not present in DBMS.
 DBMS does not apply any security with regards
to data manipulation.
 DBMS uses file system to store data , so there
will be no relation between the tables.
 DBMS has to provide some uniform methods to
access the stored information.
 DBMS does not support distributed database .
 DBMS is meant to be far small organization and
deal with small data. It supports single user.
 Examples of DBMS are file system, xml etc.
 RDBMS store data in a tubular form.
 In RDBMS, the tables have an identifier
called primary key and the values are stored
in the form of tables.
 Normalization is present in RDBMS.
 RDBMS defines the integrity constraint for
the purpose of acid property.
 RDBMS data values are stored in the form of
tables , so a relationship between these data
values will be stored in the form of a table as
well.
 RDBMS system supports a tubuler structure
of the and a relationship between them to
access the stored information .
 RDBMS supports distributed database.
 RDBMS is designed to handle large amount
of data .It supports multiple users.
 Example of RDBMS are mysql , postgre ,
sql server, oracle etc.
Difference between DBMS and RDBMS

7. VIEW
 A view is a subset of a database that is generated
from a query and stored as a permanent object.
 Views represent a subset of the data contained in a
table.
 View can join and simplify multiple tables into one
virtual table.
• View is simply a structured query language (SQL)
query stored as an object.

8. Concept of Keys:
1. Super Key – An attribute or a combination of attribute
that is used to identify the records uniquely is known as
Super Key. E.g: ID, ID name, ID adress etc.
2. Candidate Key – It is an attribute or combination of
attribute that identifies the record uniquely but none of its
proper subsets can identify the records uniquely. E.g : ID,
Name , Address
3. Primary Key – A Candidate Key that is used by the
database designer for unique identification of each row in a
table is known as Primary Key.
4. Foreign Key – A foreign key is an attribute or
combination of attribute in one base table that points to the
candidate key (generally it is the primary key) of another
table.

9. THANK YOU