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310-811 - Sun Certified MySQL 5.0 Database(R) Administrator Part II - Dump Information

Vendor : SUN
Exam Code : 310-811
Exam Name : Sun Certified MySQL 5.0 Database(R) Administrator Part II
Questions and Answers : 138 Q & A
Updated On : August 17, 2017
PDF Download Mirror : 310-811 Brain Dump
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QUESTION: 123

Which of the following disk characteristics are most important to a database server and why?


  1. Disk size, because a database needs a lot of storage space.

  2. Transfer rate, because the database needs to be able to transfer the data off the disks at a very high rate.

  3. Disk seek time, because it is more important for the heads of the disk to move quickly from track to track.


Answer: C


QUESTION: 124

Which of the following best describe some possible benefits of using RAID?


  1. Better user-level security.

  2. Data redundancy.

  3. Read performance gains.

  4. Write performance gains.

  5. Hot-swappable disk drives.

  6. Better memory and processor utilization.


Answer: B, C, D, E


QUESTION: 125

Suppose you have a server whose log files, data directory, and temporary files are distributed on different disks. How would this affect overall performance, compared to a server where all components reside on a single disk?


  1. Performance would remain about the same, because the same amount of disk usage would be needed.

  2. You would expect a performance gain because the disk related activities would be split more evenly.

  3. Performance would drop because the server would have to do extra work to read information off of the different disks.


QUESTION: 126

Which of the following are methods to improve performance?


  1. Spreading single tables to different disks pointed to by a symbolic link.

  2. Spreading whole databases to different disks pointed to by a symbolic link.

  3. Moving the MySQL utilities such as mysqladmin to different disks pointed to by a symbolic link.

  4. Moving less needed parts of the MySQL install such as the documentation or the test files to different disks pointed to by a symbolic link.


Answer: A, B


QUESTION: 127

The type of file system you chose may affect MySQL use and/or performance with regard to...


  1. Table opening time.

  2. Size limits of files.

  3. Time to recover from a crash.

  4. The number of users MySQL can handle.

  5. The type of storage engines that can be used.


Answer: A, B, C


QUESTION: 128

Which of the following steps are used to create database symbolic links on Windows?


  1. Stop the server.

  2. Restart the server.

  3. Use the ln -s command.

  4. Update your my.ini with the path to the new location.

  5. Move the database directory from the data directory to a new location.

  6. Create a file in the data directory with the database name with an extension of .sym that contains the full path to the new location.


QUESTION: 129

Which of the following best describes the effect that the per-process limit of open file descriptors in an operating system has on MySQL, and what can be done to increase it?


  1. The --open-files-limit option can be used to increase it.

  2. It limits the amount of operations MySQL can perform at one time.

  3. It limits the maximum size of the table cache that holds file descriptors.

  4. The operating system may be able to be reconfigured to increase this limit.


Answer: C, D


QUESTION: 130

Which of the following best describes what may limit the number of simultaneous connections to the server? What are possible ways to increase it?


  1. It is limited by the maximum size of the table cache.

  2. The --key_cache option may be used to increase the limit.

  3. The maximum number of threads per-process of the operating system.

  4. The operating system may be able to be reconfigured to increase this limit.


Answer: C, D


QUESTION: 131

Which of the following best describes what the connection backlog is and why it may need to be increased?


  1. It may need to be increased on a server with a high rate of transactions.

  2. The backlog is the queue of processes waiting to be processed on a server.

  3. The backlog is the queue of network connections of clients waiting to connect.

  4. It may need to be increased on a server with a high rate of client connections.


Answer: C, D


QUESTION: 132

Which of the following are requirements for running more than one MySQL server on the same machine?


  1. On Windows each server that runs as a service must have a different service name.

  2. Each server must have its own log files.

  3. Each server must share the same error log.

  4. Each server must run on a different disk.

  5. Each server must have its own network interfaces.

  6. There must be more than one processor on the machine.

  7. InnoDB tablespace files must be separate between servers.


Answer: A, B, E, G


QUESTION: 133

Which of the following are general features of replication?


  1. Can be used to distribute the load caused by servicing many clients.

  2. Provides complete redundancy and high availability at all times.

  3. Multiple copies are available in case a server crashes or goes offline.

  4. Allows the databases on one server to be made available on another server.


Answer: A, C, D


QUESTION: 134

What kind of replication is supported by the MySQL server?


  1. Multiple-master replication

  2. Master to slave replication

  3. Single file based clustering

  4. MySQL doesn't support replication


Answer: B


QUESTION: 135


Can you have several MySQL servers running on the same computer, using the same InnoDB tablespace files?


  1. No

  2. Yes, always

  3. Yes, provided their permissions are set to read-only


Answer: A


QUESTION: 136

Which of the following is/are required on the master server for replication to work?


  1. Issue the START MASTER command.

  2. Binary logging must be turned on.

  3. Tell the master which slaves to connect to.

  4. Make a backup of all databases to be replicated.


Answer: B


QUESTION: 137

Which of the following best describes what MASTER_LOG_FILE and MASTER_LOG_POS provides?


  1. The path of the log file.

  2. The file to log replication actions to.

  3. The masters binary log name used for replication.

  4. The position in the masters binary log in which to start replication.


Answer: C, D


QUESTION: 138

Which of the following best describes what the master.info file contains and how it is used?


  1. It contains the values from the CHANGE MASTER statement.

  2. When the slave restarts it looks for which master to use from this file.


  3. It contains information about the master server, its slaves and its configuration.

  4. It is used by an administrator to determine what slaves connect to the master, and other information about the master server.


Answer: A, B


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MySQL 5 Certification Study Guide / Edition 2

Introduction.

About This Book.

Sample Exercises

Other Required Reading

Manuals

Sample Data

Study Guide Errata

Certification Information at .mysqlm

The MySQL Certification Candidate Guide

The Certification Mailing List

Conventions Used in This Book

Running MySQL on Microsoft Windows

About the Exams

Registering for an Exam

Going to the Exam

Taking the Exam

Reading Questions

Answering Questions

After the Exam

Retaking Exams

Warning

Interpreting DESCRIBE Output

Sample Tables

MYSQL DEVELOPER EXAMS.

MySQL Developer I Exam.

1. ClientServer Concepts.

General MySQL Architecture

Invoking Client Programs

General Command Option Syntax

Connection Parameter Options

Using Option Files

Selecting a Default Database

Establishing a Connection with a GUI Client

Server SQL Modes

2. The mysql Client Program.

Using mysql Interactively

Statement Terminators

The mysql Prompts

Using Editing Keys in mysql

Using Script Files with mysql

mysql Output Formats

Client Commands and SQL Statements

Using Server-Side Help

Using the --safe-updates Option

3. MySQL Query Browser.

MySQL Query Browser Capabilities

Using MySQL Query Browser

Using the Query Window

Entering Queries

The Result Area

The Script Editor

Stored Routine Management

The Object and Information Browsers

The MySQL Table Editor

Connection Management

Using the Connection Dialog

Editing Connection Profiles

The Options Dialog

4. MySQL Connectors.

MySQL Client Interfaces

MySQL ConnectorODBC

MySQL ConnectorJ

MySQL ConnectorNET

5. Data Types.

Data Type Overview

Numeric Data Types

Integer Data Types

Floating-Point Data Types

Fixed-Point Data Types

The BIT Data Type

String Data Types

Character Set Support

Non-Binary String Data Types: _CHAR, VARCHAR, TEXT

Binary String Data Types: BINARY, VARBINARY, BLOB

The ENUM and SET Data Types

Temporal Data Types

The DATE, TIME, DATETIME, and YEAR Data Types

The TIMESTAMP Data Type

Per-Connection Time Zone Support

Column Attributes

Numeric Column Attributes

String Column Attributes

General Column Attributes

Using the AUTO_INCREMENT Column Attribute

Handling Missing or Invalid Data Values

Handling Missing Values

Handling Invalid Values in Non-Strict Mode

Handling Invalid Values in Strict Mode

Enabling Additional Input Data Restrictions

Overriding Input Data Restrictions

6. Identifiers.

Identifier Syntax

Case Sensitivity of Identifiers

Using Qualified Names

Using Reserved Words as Identifiers

7. Databases.

Database Properties

Creating Databases

Altering Databases

Dropping Databases

Obtaining Database Metadata

8. Tables and Indexes.

Table Properties

Creating Tables

Creating Tables Using an Explicit Definition

Specifying the Storage Engine for a Table

Creating Tables Based on Existing Tables

Using TEMPORARY Tables

Altering Tables

Adding and Dropping Columns

Modifying Existing Columns

Renaming a Table

Specifying Multiple Table Alterations

Dropping Tables

Emptying Tables

Indexes

Types of Indexes

Creating Indexes

Choosing an Indexing Algorithm

Dropping Indexes

Obtaining Table and Index Metadata

9. Querying for Data.

Using SELECT to Retrieve Data

Specifying Which Columns to Retrieve

Renaming Retrieved Columns

Identifying the Database Containing a Table

Specifying Which Rows to Retrieve

Using ORDER BY to Sort Query Results

The Natural Sort Order of Data Types

Limiting a Selection Using LIMIT

Using DISTINCT to Eliminate Duplicates

Aggregating Results

The MIN() and MAX() Aggregate Functions

The SUM() and AVG() Aggregate Functions

The COUNT() Aggregate Function

The GROUP_CONCAT() Function

Aggregation for NULL Values or Empty Sets

Grouping Results

GROUP BY and Sorting

Selecting Groups with HAVING

Using GROUP BY and WITH ROLLUP

Using UNION

10. SQL Expressions.

Components of SQL Expressions

Numeric Expressions

String Expressions

Case Sensitivity in String Comparisons

Using LIKE for Pattern Matching

Temporal Expressions

NULL Values

Functions in SQL Expressions

Comparison Functions

Control Flow Functions

Aggregate Functions

Mathematical Functions

String Functions

Temporal Functions

NULL- Functions

Comments in SQL Statements

11. Updating Data.

Update Operations

The INSERT Statement

Adding Multiple Records with a Single INSERT Statement

Handling Duplicate Key Values

Using INSERT ... ON DUPLICATE KEY UPDATE

The REPLACE Statement

The UPDATE Statement

Using UPDATE with ORDER BY and LIMIT

Preventing Dangerous UPDATE Statements

Multiple-Table UPDATE Statements

The DELETE and TRUNCATE TABLE Statements

Using DELETE with ORDER BY and LIMIT

Multiple-Table DELETE Statements

Privileges Required for Update Statements

MySQL Developer II Exam.

12. Joins.

Overview

Writing Inner Joins

Writing Inner Joins with the Comma Operator

Writing Inner Joins with INNER JOIN

Writing Outer Joins

Writing LEFT JOIN Queries

Writing RIGHT JOIN Queries

Resolving Name Clashes Using Qualifiers and Aliases

Qualifying Column Names

Qualifying and Aliasing Table Names

Multiple-Table UPDATE and DELETE Statements

13. Subqueries.

Types of Subqueries

Subqueries as Scalar Expressions

Correlated Subqueries

Comparing Subquery Results to Outer Query Columns

Using ALL, ANY, and SOME

Using IN

Using EXISTS

Comparison Using Row Subqueries

Using Subqueries in the FROM Clause

Converting Subqueries to Joins

Converting Subqueries to Inner Joins

Converting Subqueries to Outer Joins

Using Subqueries in Updates

14. Views.

Reasons to Use Views

Creating Views

Restrictions on Views

View Algorithms

Updatable Views

Altering Views

Dropping Views

Checking Views

Obtaining View Metadata

Privileges Required for Views

15. Importing and Exporting Data.

Import and Export Operations

Importing and Exporting Using SQL

Importing Data with LOAD DATA INFILE

Exporting Data with SELECT ... INTO OUTFILE

Data File Format Specifiers

Importing and Exporting NULL Values

Importing and Exporting Data from the Command Line

Importing Data with mysqlimport

Exporting Data with mysqldump

16. User Variables.

User Variable Syntax

User Variable Properties

17. Prepared Statements.

Benefits of Prepared Statements

Using Prepared Statements from the mysql Client

Preparing a Statement

Executing a Prepared Statement

Deallocating Prepared Statements

18. Stored Procedures and Functions.

Benefits of Stored Routines

Differences Between Stored Procedures and Functions

The Namespace for Stored Routines

Defining Stored Routines

Creating Stored Routines

Compound Statements

Declaring Parameters

The DECLARE Statement

Variables in Stored Routines

Conditions and Handlers

Cursors

Retrieving Multiple Result Sets

Flow Control

Altering Stored Routines

Dropping Stored Routines

Invoking Stored Routines

Obtaining Stored Routine Metadata

Stored Routine Privileges and Execution Security

19. Triggers.

Reasons to Use Triggers

Trigger Concepts

Creating a Trigger

Restrictions on Triggers

Referring to Old and New Column Values

Destroying a Trigger

Privileges Required for Triggers

20. Obtaining Database Metadata.

Overview of Metadata Access Methods

Using INFORMATION_SCHEMA to Obtain Metadata

Using SHOW and DESCRIBE to Obtain Metadata

Using mysqlshow to Obtain Metadata

21. Debugging MySQL Applications.

Interpreting Error Messages

The SHOW WARNINGS Statement

The SHOW ERRORS Statement

The perror Utility

22. Basic Optimizations.

Overview of Optimization Principles

Using Indexes for Optimization

Types of Indexes

Principles for Index Creation

Indexing Column Prefixes

Leftmost Index Prefixes

General Query Enhancement

Query Rewriting Techniques

Using EXPLAIN to Obtain Optimizer Information

Optimizing Queries by Limiting Output

Using Summary Tables

Optimizing Updates

Choosing Appropriate Storage Engines

Normalization

MYSQL DBA EXAMS.

MySQL DBA I Exam.

23. MySQL Architecture.

ClientServer Overview

Communication Protocols

The SQL Parser and Storage Engine Tiers

How MySQL Uses Disk Space

How MySQL Uses Memory

24. Starting, Stopping, and Configuring MySQL.

Types of MySQL Distributions

MySQL Binary Distributions

MySQL Source Distributions

Starting and Stopping MySQL Server on Windows

Server Startup Prerequisites on Windows

Running MySQL Server Manually on Windows

Running MySQL Server as a Windows Service

Starting and Stopping MySQL Server on Unix

Server Startup Prerequisites on Unix

Choosing a Server Startup Method on Unix

Runtime MySQL Configuration

Log and Status Files

The General Query Log

The Binary Log

The Slow Query Log

The Error Log

Status Files

Loading Time Zone Tables

Security- Configuration

Setting the Default SQL Mode

Upgrading MySQL

25. Client Programs for DBA Work.

Overview of Administrative Clients

MySQL Administrator

mysql

mysqladmin

mysqlimport

mysqldump

Client Program Limitations

26. MySQL Administrator.

MySQL Administrator Capabilities

Using MySQL Administrator

Starting MySQL Administrator

Selecting an Operational Mode

Server Monitoring Capabilities

Server Information

Server Connections

Health

Server Logs

Replication Status

Catalogs

Server Configuration

Service Control

Startup Variables

User Administration

Backup and Restore Capabilities

Making Backups

Restoring Backups

MySQL Administrator System Tray Monitor

27. Character Set Support.

Performance Issues

Choosing Data Types for Character Columns

28. Locking.

Locking Concepts

Explicit Table Locking

Advisory Locking

29. Storage Engines.

MySQL Storage Engines

The MyISAM Engine

MyISAM Locking Characteristics

MyISAM Row-Storage Formats

The MERGE Engine

MERGE Locking Characteristics

The InnoDB Engine

The InnoDB Tablespace and Logs

InnoDB and ACID Compliance

The InnoDB Transaction Model

InnoDB Locking Characteristics

InnoDB Isolation Levels, Multi-Versioning, and Concurrency

Using Foreign Keys

Configuring and Monitoring InnoDB

The MEMORY Engine

MEMORY Indexing Options

The FEDERATED Engine

The Cluster Storage Engine

Other Storage Engines

30. Table Maintenance.

Types of Table Maintenance Operations

SQL Statements for Table Maintenance

CHECK TABLE

REIR TABLE

ANALYZE TABLE

OPTIMIZE TABLE

Client and Utility Programs for Table Maintenance

The mysqlcheck Client Program

The myisamchk Utility

Options for mysqlcheck and myisamchk

Repairing InnoDB Tables

Enabling MyISAM Auto-Repair

31. The INFORMATION_SCHEMA Database.

INFORMATION_SCHEMA Access Syntax

INFORMATION_SCHEMA Versus SHOW

Limitations of INFORMATION_SCHEMA

32. Data Backup and Recovery Methods.

Introduction

Binary Versus Textual Backups

Making Binary Backups

Making Binary MyISAM Backups

Making Binary InnoDB Backups

Other Binary Backup Tools

Conditions for Binary Portability

Making Text Backups

Making Text Backups via SQL

Making Text Backups with mysqldump

Making Text Backups with MySQL Administrator

Backing Up Log and Status Files

Replication as an Aid to Backup

MySQL Cluster as Disaster Prevention

Data Recovery

Reloading mysqldump Output

Reloading Dumps with MySQL Administrator

Processing Binary Log Contents

33. Using Stored Routines and Triggers for Administration.

Using Stored Routines and Triggers for Security Purposes

Using Stored Routines to Enhance Performance

MySQL DBA II EXAM.

34. User Management.

User Account Management

Types of Privileges That MySQL Supports

The Grant Tables

Approaches to Account Management

Creating and Dropping User Accounts

Specifying Account Names

Granting Privileges

Revoking Privileges

Changing Account Passwords

When Privilege Changes Take Effect

Specifying Resource Limits

Privileges Needed for Account Management

Client Access Control

Connection Request Checking

Statement Privilege Checking

Resource Limit Checking

Disabling Client Access Control

35. Securing the MySQL Installation.

Security Issues

Operating System Security

Filesystem Security

Log Files and Security

Network Security

Securing the Initial MySQL Accounts

General Privilege Precautions

MySQL Cluster Network Security

FEDERATED Table Security

36. Upgrade- Security Issues.

Upgrading the Privilege Tables

Security- SQL Mode Values

37. Optimizing Queries.

Identifying Candidates for Query Analysis

Using EXPLAIN to Analyze Queries

How EXPLAIN Works

Analyzing a Query

EXPLAIN Output Columns

Using SHOW WARNINGS for Optimization

MyISAM Index Caching

38. Optimizing Databases.

General Table Optimizations

Normalization

MyISAM-Specific Optimizations

MyISAM Row-Storage Formats

Keep Optimizer Information Up to Date

FULLTEXT Indexes

Specifying MyISAM Maximum Row Count

InnoDB-Specific Optimizations

MERGE-Specific Optimizations

MEMORY-Specific Optimizations

39. Optimizing the Server.

Interpreting mysqld Server Information

Accessing Server System Variables

Accessing Server Status Variables

Measuring Server Load

Tuning Memory Parameters

Global (Server-Wide) Parameters

Per-Client Parameters

Using the Query Cache

Enabling the Query Cache

Measuring Query Cache Utilization

40. Interpreting Diagnostic Messages.

Sources of Diagnostic Information

Using the Error Log for Diagnostic Purposes

Using The Slow Query Log for Diagnostic Purposes

41. Optimizing the Environment.

Choosing Hardware for MySQL Use

Configuring Disks for MySQL Use

Moving Databases Using Symbolic Links

MyISAM Table Symlinking

Network Issues

Optimizing the Operating System for MySQL Use

42. Scaling MySQL.

Using Multiple Servers

Replication

Setting Up Replication

The Binary and Relay Logs

Replication- Threads

Replication Troubleshooting

Replication Compatibility and Upgrading

APPENDIXES.

A. References.

B. Other Offers.

Index.




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