how to create full database backup how to restore from backup advantages of using database backup drawbacks and limitatiins

1. SUBMITTED TO-
Er. Beena Awasthi
SUBMITTED BY-
Anshu Maurya (005)
Subhi Agnihotri (033)
Backup and Recovery of SQL Server Database

2.  Introduction
 How to create a full “Database Backup”
 How to restore from “Backup”
 Advantages of using Database Backup
 Drawbacks and Limitations
 Conclusion

3.  In SQL Server we can create database backup in 3 ways
• Full – creates a complete backups of database as well as part of
transaction log, so the database can be recovered.
• Differential – a data backup that is based on the latest full backup
of a complete or partial database. It contains only those extends that
have changed since the last full backup.
• Transaction Log – A backup of transaction logs that includes all
log records that were not backed up in a previous log backup. It
allows us to backup the active part of the transaction log.

4.  Right click on the database that you want to backup
Then, Select "Tasks" and click on "Back Up”.

5.  Now, Select the Backup type “Full” to create a full database
backup and “Add” backup location.

6.  Give file name and Click “OK”.

7.  Again, Click on “Ok” to create full database backup.

8. • Right click on the database and click on “Restore
Database”.

12.  Protects you from potentially catastrophic data loss.
o Backups of a database are useful for routine administrative
purposes.
 With valid backups of a database, you can recover your data
from many failures, such as:
• Media failure.
• User errors, for example, dropping a table by mistake.
• Hardware failures, for example, a damaged disk drive or
permanent loss of a server.
• Natural disasters.

13.  Due to a full backup of the database, every time space
required might develop into an issue.
 In case of a disaster, recovery is only possible since the last
FULL backup.
 Backups created by more recent versions of SQL server
cannot be restored in earlier versions of SQL Server
(doesn’t allows downgrading).
 Database created in lower versions of SQL server takes
more time to restore in higher versions due to the upgrade
process of database.

14.  DBA must be prepared for situations where a failure impacts the
availability, integrity or usability of a database.
 Reacting to failures and disruptions is a key component of DBA’s
job.
 The idea of creating a database backup and restoring them when
they are needed creates space overhead wherever we save the
backup copy.
 But it has saved many business industries and other organizations
from loss of millions or billion dollars.