abhay singh

8/2/2019 Abhay Singh

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A Summer Training Presentation

on Oracle 9i and Database

Administration

Presented By:Name-Abhay Singh

Roll no.-0812710401

Branch-CSE(7th Semester )


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Database Management System

Database

A set of inter-related data acting as a central reservoir of datathat can be accessed by many users

DBMSThe software that manages database. A computer-based recordkeeping system which consists of software for processing acollection of interrelated data.

Database Administrator

Centrally manages the database. The DBA initially studies theSystem and accordingly decides its various process.


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Oracle Internet Platform

Clients

Systemmanageme

nt

Network services

DatabasesApplication

servers

Developme

nttools

Internet applications

Presentation andbusiness logic

Business logicand data

Any browser Any FTP clientAny mailclient

Java

SQL

PL/SQL


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Introduction to SQL

SQL is used to make a request to retrieve data from a database.

The DBMS processes the SQL request, retrieves the requested

data from the database, and returns it.

This process of requesting data from a database and receivingback the results is called aDatabase Query and hence the

name Structured Query Language.

Efficient, easy to learn and use.


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SQL Statements

Data retrieval

Select.

Data manipulation language (DML)

Insert,delete,update,merge.

Data definition language (DDL)

Create,alter,drop,rename,truncate.

Transactional control

Commit,rollback,savepoint.

Data control language (DCL)

grant,revoke.


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SQL and iSQL*Plus Interaction

SQL statements

Oracleserver

Query resultsiSQL*Pluscommands

Client

Formatted report

InternetBrowser

iSQL*Plus


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SQL Statements Versus

iSQL*Plus Commands

SQL A language

ANSI standard

Keyword cannot beabbreviated

Statements manipulate dataand table definitions in thedatabase

iSQL*Plus An environment

Oracle proprietary

Keywords can beabbreviated

Commands do not allowmanipulation of values inthe database

Runs on a browser

Centrally loaded, does nothave to be implemented oneach machine


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Controlling User Access

Databaseadministrator

Users

Username and passwordPrivileges


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Privileges

Database security:- System security

- Data security

System privileges: Gaining access to the database

Object privileges: Manipulating the content of the database objects

Schemas: Collections of objects, such as tables, views, andsequences

The database administrator has high-level system privileges for taskssuch as:

Creating new users

Removing users Removing tables

Backing up tables


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Creating Users

CREATE USER user

IDENTIFIED BY password;

CREATE USER scottIDENTIFIED BY tiger;

User created.

The DBA creates users by using theCREATEUSERstatement.


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User System Privileges

Once a user is created, the DBA can grant specific system privileges to auser.

GRANT privilege[, privilege...]TO user[, user| role, PUBLIC...];

An application developer, for example, may have the followingsystem privileges: CREATE SESSION

CREATE TABLE

CREATE SEQUENCE

CREATE VIEW

CREATE PROCEDURE


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What is a Role?

Allocating privilegeswithout a role

Privileges

Users

Manager

Allocating privilegeswith a role


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Creating and Granting Privileges to a Role

Create a role

Grant privileges to a role

Grant a role to users

CREATE ROLE manager;

Role created.

GRANT create table, create view

TO manager;

Grant succeeded.

GRANT manager TO DEHAAN, KOCHHAR;

Grant succeeded.


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Changing Password

The DBA creates your user account and initializes your

password.

You can change your password by using the ALTER USER

statement.

ALTER USER scott

IDENTIFIED BY lion;

User altered.


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Oracle 9i Enterprise


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Primary Components of Oracle Server

Architecture Oracle server: There are several files, processes and memory

structures in an oracle server, not all of them are used whenprocessing a SQL statement. The oracle server consists of an oracleinstance and an oracle database.

Oracle instance: An oracle instance is the combination of thebackground processes and memory structures.

Oracle database: An oracle database consists of operating system

files, also known as database files that provide the actual physicalstorage for database information. The database files are used toensure that the data is kept consistent and can be recovered in theevent of a failure of a instance.


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Database Administrator

A database administrator (DBA) is a person who is

responsible for the environmental aspects of a database. Ingeneral, these include:

a) Recoverability - Creating and testing backups

b) Integrity - Verifying or helping to verify dataintegrity

c) Security - Defining and/or implementing access

controls to the data

d) Performance - Ensuring maximum performance


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PROJECT ON

LIBRARY MANAGEMENT SYSTEM

The objective of this project is the development of a system which couldovercome the problem of handling the large data manually

Present Library system is totally handled through pen and paper .Bigand thick register are being used to maintain the book records .Onebook is entered in different registers to maintain proper records .Thiscauses a lot of data redundancy .This make the updating of books verydifficult i.e. if changes are done there is greater probability of datainconsistency which causes a lot of problem.


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APPLICATION THAT ARE PERFORMEDBY THIS PROGRAM IS SHOWN AS-In books record in library

ADD NEW RECORDDELETE RECORDMODIFY RECORDSHOW RECORD

In membership record in library

ADD NEW MEMBERDELETE MEMBERMODIFY RECORDSHOW MEMBER RECORD

In issue return

TO ISSUE BOOKSTO RETURN BOOKSTOSHOW ISSUED BOOKS


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TABLE DESIGN

Account : Table

S.No.

FieldName

Data Type

1 Accno Number2 Total_limit Number3 Books_left Text4 Status Text

Issue : Table

S.No.

Field Name DataType

1 Bno Number2 Id Number

3 Issue_date Date/time4 Due_date Date/tim

e5 Copies_avail

ableNumber


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User : Table

S.No.

FieldName

Data Type

1 Id Number2 Roll_no Number3 Name Text4 Branch Text

Book : Table

S.No

.

Field

Name

Data Type

1 B_no Number2 ISBN Number3 Subject Text4 Name Text5 Author Text6 Publisher Text7 Editor Number8 Copies Number9 Cost Number

Issue_return : Table

S.No.

FieldName

Data Type

1 B_no Number

2 Id Number

3 Issue_date Date/Time4 Due_date Date/Time

5 Return_date

Date/time

6 Fine Number

7 Copies_av

ailable

Number


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PROJECT DETAILS


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MAIN MENU

ADMINISTRATIVEWORK

ISSUE/

RETURN

Issue

View

Members

EXITSEARCH

ADD/

DELETE

VIEW

DELETED

ITEMS

MODIFY

EXIT

ADDITION

DELETE

RETURN

VIEW

PACK

RETREIVE

VIEW

NAME

AUTHORS NAME

CLASS NUMBER

ACCESSION NUMBER

BY BOOKNUMBER BY BOOK NAME


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THANK YOU!!!!!!!

abhay singh

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