DATABASE PRESENTATION

WHAT IN TODAY’S
PRESENTATION???
 VIKAS
 ADITYA
 SHIVAAY
 AMAN
 TANUJ
 SUNNY
 SHIVAAY
 What is database???
 Types of database
 Database concepts
 What is
Relationship????
 Relational Algebra
 Normalization
 SQL
 Designing reports

What is Database ???
A Database is an
organized collection of
data( If Information is
not organized it is not
useful).

Types of Database
FLAT FILE
DATABASE
RELATIONAL
DATABASE
RDBMS

FLAT FILE DATABASE
A flat file database is
a database that stores data in a
plain text file. Each line of the
text file holds one record, with
fields separated by delimiters,
such as commas or tabs.

RELATIONAL DATABASE
A Relational database is a type
of database that store data in
several tables.
These tables are related to one
another.
The relationship between
different tables can be defined
by their common fields.

RDBMS
RDBMS Stands for "Relational
Database Management System.
 An RDBMS is a DBMS designed
specifically for relational databases.
 Therefore, RDBMS is a subset of
DBMS.
 A relational database refers to a
database that stores data in a structured
format, using rows and columns.

DATABASE SERVER
A database server is a
server which uses a
database application that
provides database services
to other computer programs
or to computers, as defined
by the client–server mode.

DATABASE CONCEPTS
In a relational database,
All data is held
in tables, which are made up of rows
and columns.
Each
table has one or more columns, and
each column is assigned a specific data
type, such as an integer number, a
sequence of characters (for text), or a
date.

BASIC DATABASIC
CONCEPTS
Field(Column)
Record(Row)
Table(File)
Database
Records
Value (Data)

WHAT IS RELATIONSHIP???
A relationship is a situation that
exists between two relational
database tables when one table
has a foreign key that references
the primary key of the other table.
 Relationships allow relational
databases to split and store data in
different tables, while linking
disparate data items.

RELATIONAL
ALGEBRA
Relational algebra is a procedural
query language, which takes instances
of relations as input and yields instances
of relations as output.
It uses operators to perform queries. An
operator can be either unary or binary.
 They accept relations as their input and
yield relations as their output.

NORMALIZATION
The process of data
analysis used for grouping
entities and data elements
into harmonious relations
is know as Normalization.

TYPES OF POPULAR
NORMALIZATION FORM
First normal
Second normal form
Third normal form

SQL(STRUCTU
RED QUERY
LANGUAGE)

SQL
SQL is the standard language
used for relational databases.
 It is declarative language
where users declare what
they want without having to
write a step by stem
procedure.
 It was first implemented by

TYPES OF SQL
DDL
DML
DCL
TCL

EXAMPLES DDL COMMANDS
CREATE – is used to create the database or
its objects (like table, index, function, views,
store procedure and triggers).
DROP – is used to delete objects from the
database.
ALTER-is used to alter the structure of the
database.
TRUNCATE–is used to remove all records
from a table, including all spaces allocated
for the records are removed.
COMMENT –is used to add comments to
the data dictionary.

EXAMPLES OF DML
COMMANDS
INSERT – is used to insert
data into a table.
UPDATE – is used to update
existing data within a table.
DELETE – is used to delete
records from a database
table.

EXAMPLES OF DCL
GRANT-gives user’s access
privileges to database.
REVOKE-withdraw user’s
access privileges given by using
the GRANT command.

EXAMPLES OF TCL
COMMIT– commits a Transaction.
ROLLBACKS-rollbacks a transaction
in case of any error occurs.
SAVEPOINT–sets a save point within
a transaction.
SET TRANSACTION–specify
characteristics for the transaction.

DESIGNING
REPORTS
A Report is the summary of your
database.
It consists of information obtained
from tables or queries and
presented as per user’s
requirement.
Reports are generally prepared and
presented in hard copy.
Reports also provide the facility to

REPORT SECTION
REPORT HEADER
PAGE HEADER
DETAIL
PAGE FOOTER
REPORT FOOTER

DATABASE PRESENTATION

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