Instructor InputsSession 7..Session OverviewThis session includes the following topics: pot

This session includes the following topics: Detaching and attaching a database Best practices Slide 1 Installing Windows XP Professional Using Attended Installation Slide 1 of 16 Ve

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Instructor Inputs S e

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This session includes the following topics:

Detaching and attaching a database

Best practices

Slide 1

Installing Windows XP Professional Using Attended Installation

Slide 1 of 16

Ver 1.0

Querying, Managing, and Administering Databases Using SQL Server 2005

Collaborate Session 7

Objectives

In this session, you will learn about:

Detaching and attaching a database Restore operation

Best practices that can be considered while managing databases and database objects using SQL Server 2005 Tips and tricks will help you to effectively manage database and database objects using SQL Server 2005

FAQs related to database files and filegroups of SQL Server 2005

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Slide 2 of 16

Knowledge Byte

Detaching a database is the same as logically removing the database from the SQL Server

A SQL Server 2005 database can be detached by using:

SQL Server Management Studio T-SQL

To move a database from an instance of SQL Server, you can detach it from one instance and attach it to another instance.

You can attach a database by using:

SQL Server Management Studio T-SQL

The process of retrieving data from a backup and applying transaction log to the data is called as restoring.

Slide 3

Installing Windows XP Professional Using Attended Installation Querying, Managing, and Administering Databases Using SQL Server 2005

Knowledge Byte (Contd.)

The process of rolling forward uncommitted transactions, if any, and bringing the database online is known as recovery

In a restore process, the logged changes are applied to the data in a database to retrieve the data on time This process

is known as rolling forward and the set of data restored is known as roll forward set

Each restore scenario is implemented by using one or more restore steps (operations), called a restore sequence

A restore operation is a multiphase process The possible phases of a restore process are:

Data copy phase Redo phase Undo phase

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Slide 4 of 16

Best Practices

While creating your own database objects, ensure that you

do not create the database objects in the system databases like master database

While moving master database and log files to another location, ensure that you also move the Resource database

to the same location.

While restoring the Resource database you must be careful not to overwrite the current Resource database with an out-of-date or potentially insecure version of Resource database

Slide 5

Best Practices (Contd.)

The size of tempdb can affect the performance of a system

If the size of the tempdb is less than the requirement of the server, it would have an impact on the performance of the server A good practice is to increase the size of tempdb.

It is not a good idea to shrink a database if the database has frequent updations In these cases, shrinking a database is

a wasted operation

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Slide 6 of 16

Tips and Tricks

Backup the master database after performing the following operations:

Creating, modifying, or dropping a database Changing server and database configuration values Modifying or adding logon accounts

After restoring a backup of mssqlsystemresource.mdf, it is a good practice to reapply any subsequent updates

After you add or delete files in a database, create a database backup immediately

If you have to create multiple secondary files in your database, create them in a separate filegroup

Do not put the Resource database in either compressed or encrypted NTFS file system folders

Slide 7

Can you change the owner of the master database?

You cannot change the owner of master database as it is owned by dbo.

FAQs

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Slide 8 of 16

Can master database be dropped?

No, you cannot drop master database as it is a system database.

FAQs (Contd.)

Slide 9

While creating objects in a database if user does not specify the filegroup, which filegroup are objects assigned to?

The objects are by default assigned to default filegroup The primary filegroup is the default filegroup.

FAQs (Contd.)

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Slide 10 of 16

What are the three types of files used to store a database?

Which of these files are must for a database?

The three types of files to store a database are primary files, secondary files, and transaction files A database must have a primary file and atleast one transaction log file.

FAQs (Contd.)

Slide 11

Can transaction log files be a part of any filegroup?

No, transaction log file are never a part of any filegroup

FAQs (Contd.)

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Slide 12 of 16

Challenge

Which of the following statement is NOT correct about detaching a database?

It’s a logical removal of database from the server

A detached database can be attached to a SQL Server in the same computer

Using the SQL Server Management Studio you can detach a database

A detached database cannot be attached to SQL Server of another computer

Answer:

A detached database cannot be attached to SQL Server

of another computer

Slide 13

Challenge (Contd.)

Which T-SQL procedure is used to detach a database?

sp_detach_db sp_detach sp_db_detach sp_detachdb

Answer:

sp_detach_db

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Slide 14 of 16

Which of the following statement will detach the AdventureWorks and execute the UPDATE STATISTIC process?

sp_detach_db 'AdventureWorks', 'TRUE' sp_detach_db 'AdventureWorks', ‘NULL’

sp_detach 'AdventureWorks', 'TRUE' sp_detach 'AdventureWorks', 'NULL'

Answer:

sp_detach_db 'AdventureWorks', ‘NULL’

Slide 15

In which condition CREATE DATABASE with FOR ATTACH clause is used?

When the database is detached using sp_detach_db statement

When the database is detached using SQL Server Management Studio

When the number of data files to be attached is more than 16 When the database needs to be attached to a server on a different computer

Answer:

When the number of data files to be attached is more than 16

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Slide 16 of 16

Which phase of restore process is skipped if the data is already transactionally consistent at the start of the recovery process?

Redo Phase Data Copy Phase Undo Phase Roll Forward Phase

Answer:

Undo Phase

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1 d A detached database cannot be attached to SQL Server of another computer

4 c When the number of data files to be attached is more than 16

5 c Undo Phase

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1 Which of the following statement is true about log files?

a These file are used to recover a database

b These files have an extension of ndf

c A database can have only one log file

d The minimum size of log files is 256 MB

2 Which of the following commands will remove the filegroup fg1 from the database

db1?

3 Which of the following commands will show the information for the emp_sts

statistics on the Event table?

c sp_helpstats ('db1.Event', emp_sts)

d sp_helpstats 'db1.Event', ‘emp_sts’

4 Which of the following command checks for the consistency of disk space allocation

structures for a particular database?

5 Which of the following is NOT a schedule type available in the New Job Schedule

dialog box?

a Recurring

b First time

c Start automatically when SQL Server Agent starts

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b Database scope

Server login?

9 Which of the following fixed database role allows adding, modifying, and dropping database objects?

10 Which of the following is a database level permission?

Solutions

1 These file are used to recover a database

5 First time

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After SQL Server installation and database and database objects creation, you as a

database administrator need to decide on the security of the data and database server

Security means restricting access to data and database server by granting and denying

access to database and its objects to the right person at right time

Discuss the basic components of SQL Server that are used in implementing security such

as users and logins

Instructor Inputs

You can conduct the discussion as follows:

Discuss the principals, securables, and permissions to secure data and database

server

Also discuss role of encryption in securing data

Solution

To secure a database server the SQL server provides the different components to apply

security at different levels In addition the data and messages in server can also be

encrypted to provide security

Using SQL Server components to secure the database server

The SQL Server provides a set of components, such as principals, securables, and

permissions, which can be used to apply security at different levels

Principals

Principals are logical entities that need to access the resources of the SQL Server These

entities include computer accounts, logins, and user accounts used to access the data in

the database Principals can be given permission to access an object, such as tables or

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following levels:

Permissions

You can allow or disallow principals to access the securables by setting permissions Permissions govern the level of access that principals have on the securables Depending

on the role, different users can perform different actions on the database

Using encryption to secure data and messages

In addition to restricting access to database and database objects, you can add one more layer of security by encrypting data You can encrypt data and complete database objects, such as procedures or functions, by using keys and certificates A key is a value that can

be applied to a cryptographic function to encrypt or decrypt a secure data value

A digitally signed certificate ensures that the message should not be intercepted and read

by third party It also ensures that the message is not tampered or the sender’s identity altered

After creating the keys and certificates, you can use keys and certificates to encrypt data and implement security You can encrypt the data stored in a table or you can save a function or stored procedure in an encrypted format

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