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Category : Databases

What Are Mysql Databases And How Are They Useful?

June 27th 2015 Posted at Databases
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MySQL is a Relational Database Management System. This is perhaps a bit of an overly technical and cryptic answer to the question, so let’s take a look at this piece by piece.

What is a Database?

Simply put, a database is a system that allows you to store, organize and retrieve a large amount of data quickly and easily. Odds are, if a website does anything more complicated than simply providing basic information about a single company or person, a database was involved in the building. Whether it’s storing user account information, blog posts, news articles or images, if you want to manage a large amount of data, you need a database. Databases make it possible to quickly access the data you need, even if it’s one of thousands or millions of similar pieces of information.

What Does MySQL Bring to the Table?

As a relational database management system, MySQL offers the ability to abstract what the end user sees and interacts with from the physical realities of storing the data. Practically speaking, this allows great freedom to design applications and web pages without having to worry about how all your data is stored. With MySQL you can manage multiple databases and control who gets access to this data. Also worth mentioning is how the seamless integration between MySQL and the popular scripting language PHP has made the two names almost synonymous in the open source development world. As the most heavily developed open source database management system on the market, MySQL has all the critical features necessary to the operation of a database as well as additional functionality such as multiple native storage engines and commit grouping.

What Do You Mean By Open Source?

Open source software is software of which source code is openly published and can be used, modified or distributed free of royalties. The most obvious benefit here is that MySQL gives you access to a top quality database without having to pay the thousands or tens of thousands of dollars in licensing fees that are charged for SQL Server or Oracle. This is a strong motivating factor behind many small businesses choosing MySQL as their database management system of choice. Additionally, open source means that the MySQL project is under constant development by a large community of interested programmers. In open source projects, development decisions and the source code itself are subject to rigorous peer review and scrutiny. This means that MySQL is regularly updated, its development roadmap is freely available and its source code is transparent.

In many ways MySQL is the perfect solution for small to medium-sized businesses that are looking to launch web pages and applications. MySQL is feature rich, well supported and, lest we forget, free. But please don’t get the idea that MySQL is strictly small potatoes. Many well-known projects such as Facebook, Flickr and even Google make use of MySQL. MySQL isn’t just great for when you first start out; it has the tools and capability to scale from a small website to a massive behemoth like Facebook. So, when you’re searching for a web hosting provider, it is important to make sure that they provide support for MySQL databases.

Chris Ricard is the owner of TheWeb-Factory.com, a Canadian Web Hosting Company that uses Cpanel, an easy-to-use control panel with tools for business owners to make Canadian e-commerce web hosting, business quality web hosting and even personal web hosting manageable for anyone.

Using MySQL recovery utility to repair damaged MyISAM 5.0.4 table

June 27th 2015 Posted at Databases
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The MyISAM table in the MySQL database is the default type of database engine. This table stores the data in three types of files: .frm file to store the table format, .myd file to store the data, and the .myi file to store the index file. If any of these three files get damaged due to any sundry reason such as many users modifying the table simultaneously, virus infections, abrupt system shutdown, etc. MySQL provides several utilities to recover MySQL tables. However, if these tools do not work for the MySQL table you are using, then you should use a third-party MySQL repair software to repair MySQL database.

Let us take a practical situation in which you are facing the following error message while working on the MySQL 5.0.4 database table:

“MySQL error code 126: Index file is crashed”

Cause:

The most possible cause of this problem is that the MyISAM table has damaged, which is why you are unable to access and/or work on the table.

Resolution:

To resolve this problem, you should perform the following methods to recover MySQL table and use it once again:

Using ‘myisamchk’ utility: You should use the ‘myisamchk’ command to check and repair the damaged MySQL table by using the following MySQL repair syntax:

myisamchk -r

This command is used to remove the incorrect and deleted rows in the data file. Also, it reconstructs the index file.

Using Check table/Repair table: You should use the ‘Check Table’ tool to check the MyISAM table for errors using the following syntax:

CHECK TABLE tbl_name [, tbl_name] … [option] …

option = {FOR UPGRADE | QUICK | FAST | MEDIUM | EXTENDED | CHANGED}

After detecting errors in the table, you should use the ‘Repair Table’ tool to repair MySQL table. For this, you can use the following syntax:

REPAIR [NO_WRITE_TO_BINLOG | LOCAL] TABLE

tbl_name [, tbl_name] …

[QUICK] [EXTENDED] [USE_FRM]

Try to reproduce the steps that caused the error message to be displayed. If the error does not appear, then the MyISAM table is repaired. However, if the error appears again then the MySQL table is severely damaged. The use of a third-party MySQL repair software is the best bet in such cases. The use of highly intense and safe scanning algorithms along with rich user interface results in safe and easy MySQL recovery.

In such cases, the best software that I would suggest you is Stellar Phoenix Database Recovery for MySQL, which repairs MySQL database in MySQL 3.x, 4.x, 5.x, and 6.x versions. With the ability to repair MySQL files such as .ibdata, .ibd, .myd, .myi, .frm, etc from both InnoDB and MyISAM database engines, this MySQL recovery utility is compatible with Windows 7, Vista, Server 2003, XP, and 2000.

My name is Mark Willium, I have done Ph.D in computer science and currently doing research on how to recover and repair corrupted mysql database. During research i found a third party repair mysql database software to repair corrupted mysql database.

Exam Details of 005-002 Certified MySQL 5.0 DBA Part I

June 26th 2015 Posted at Databases
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The Certified MySQL 5.0 DBA Part I also known as 005-002 has been exclusively engineered for IT experts who are interested in focusing on MySQL DBA. This proctored expertise evaluation analyzes an applicants abilities in regard to setting up, keeping, providing and improving MySQL hosts.

Exam Details

The MySQL 5.0 DBA evaluation significantly varies from other past examinations. For instance:

There are no several choice concerns. The concerns are developed in a true or incorrect way.
Candidates seated for this evaluation must illustrate abilities in using MySQL hosting server.
In most circumstances, you will be offered with the solutions. However, you will be predicted to improve the data source to be able to match the objectives.

The Certified MySQL 5.0 Part I evaluation is arranged into two sessions, that is, necessary and non-compulsory projects. The necessary projects are main know-how which every DBA ought to be in a place to bring out even under stress. What this implies is that, you should be able to achieve the projects when you are limited of sleep, in the wee hours of the day when you are still worn out, or together with a Dilbert form PHB clinging over shoulder area. The non-compulsory projects include various Parts of MySQL.

Every applicant will be offered with a MySQL situation which they will be predicted to use when achieving their projects. Once they are through with the projects or if time operates out before they are able to complete all the allocated projects, the circumstances are analyzed to figure out the DBA qualification hopeful will be able to impact MySQL hosting server according to a company specifications.

Preparation Resources

If you are currently learning for the MySQL 5.0 DBA evaluation, you will be satisfied to listen to that there are numerous on the internet exercising sources available that you can use to get ready for the evaluation. However, when shopping for the best on the internet exercising source, there are a couple of Parts that you need to keep in thoughts. This will allow you to choose the best exercising source that will allow you to ranking above the needed lowest ranking.

The following are some of the things that you need to remember when choosing the right exercising resource:

Support: The exercising source ought to offer 24/7 tech assistance.
Questions: The concerns examined in the exercising source should be up-to-date. Newest concerns in regards to MySQL 5.0 DBA evaluation will allow you to get familiar with the actual evaluation.
Answers: The exercising source should provide you with solutions to the concerns.
Scenarios: Make sure that the exercising source provides various circumstances on how to improve MySQL hosts to be able to match the needs of a company.

Advantages

There are several advantages that an applicant has to gain by seated for this qualifications evaluation. Firstly, you will have proven that you have the needed abilities to not only set up, but sustain, provide and boost MySQL hosts. This in turn locations you at a better place to increase up the profession steps, which indicates better pay and enhanced way of life.

Author is currently writing on topics related to certifications and he recommends testsexpert as reliable source for test like 005-002

How To Backup Mysql Database With Phpmyadmin

June 25th 2015 Posted at Databases
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The backup of your MySQL database is an essential ingredient which you just cannot afford to lose, when it comes to effectively managing your website. MySQL uses many web applications for the purpose of storing the web content, which can take the form of blogs, videos and such other things on your website. If your files uploaded on the website are in HTML format, it would be easier to keep them from getting crashed away. You will have a copy of all of them on your own computer and can upload them again once the web server is restored after the crash.

Besides, the entire web content in the MySQL database should also be taken the backup of. If you have invested good amount of time in creating the content for your website but which is only stored into your MySQL database, you might face the danger of losing it entirely. So, keeping a backup of the content in the MySQL once every month is equally important. It does ensure that you are not losing much of your work in the event of a server crash, and would also give you a sound sleep. What’s more? This is not a difficult task either. Let’s have a look:

Step One requires you to first login into PhpMyAdmin onto your server. This option is available under the Cpanel of your web hosting account. Once you access the Control Panel, you would find the PhpMyAdmin option under the databases section.

Step Two seeks your action to select the database which you want to be backed up, from the provided dropdown menu.

Step Three takes you to a new page which will be loaded in PhpMyAdmin, displaying the database as selected in Step Two, to proceed with the backup click on the Export tab.

Step Four calls for the selection of the options in addition to the default ones. These are ‘Save’ as a file that will save the file locally to your computer system in a.sql format, and ‘Add DROP TABLE’ option that will add the drop table function, if the table exists in the database backup.

Step Five is the last step, where you only need to click the ‘Go’ button to run the backup procedure of your MySQL database. A popup window for downloading will open up, prompting you to choose the location on your PC, where you would like to save the file. The download may also start automatically, depending upon your browser settings.

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First Steps to Becoming an Oracle Database Administrator

June 24th 2015 Posted at Databases
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Yes, the salaries for a seasoned Oracle DBA can be very attractive. This has advantages and disadvantages for the DBA. 24X7 on-call duty is the norm, getting calls during vacation, weddings, baptisms, surgery, etcetera, is to be expected. If the DBA is saavy and automates much of their job, they had better find other ways to *visibly* add value to the company, or they will be out of a job.

On the upside, the profession is always changing and always challenging, and that, for many keeps it from ever being boring. The salary can be very good for an experienced database administrator with specialized skills and a degree (six figures), and even better, leadership/management credentials and experience.

A database administrator is not just a mechanic who keeps the database engine tuned and running. She is involved with capacity planning, which has a financial impact for the company. In many cases the DBA has a lot of direct customer contact if the company manages other companies data in anyway, and thus has a huge role in the relationship the company has with it’s customers. The DBA is responsible for safe-guarding the security and integrity of enterprise data. Negligence on the part of the DBA can tank a healthy company very quickly.

Ok, ready to get started? If you have finished school and Computer Science was not your degree, it’s still possible to break into the field. I have a masters in animal physiology, and started studying Oracle because when I took over the environmental data management program at McNeese State University (mumble) years ago, the budget I inherited did not Here are some initial steps:

First, if possible, position yourself in your present job where you will have an opportunity to work with the current DBA(s), or set up a small database environment from scratch. Perhaps you can propose a small project that won’t generate so much data (at least at the outset) that a lot of extra, expensive hardware will be needed. If you propose a pilot project, you may be able to justify getting a small server nearing the end of it’s warranty from the spare parts pool.

Kwan Yin – The World’s Most Consulted Oracle

June 23rd 2015 Posted at Databases
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Eastern cultures have been worshipping Kwan Yin, Kuan Yin, Quan Yin, Kannon, and Guan Yin, as the Most Compassionate Goddess of Mercy.

She was immediately connected to the worship of Virgin Mary (when Christianity was introduced into Asia), as she is the embodiment of Compassion, a motherly figure said to bestow children on the faithful, protect those at sea, protect all children and be there for anyone in need of her compassion and love.

Kwan Yin is said to hear all prayers. The name Kuan Shih Yin literally means “The one who observes, watches and hears the cries of the world”.

Legend says Kuan Yin was originally a princess who forsook marriage, and lived her saintly life in a convent, against her father (the King’s) will.

She became a Buddhist Bodhisattva (a mortal who has achieved enlightenment and earned the right to enter Heaven or Nirvana).

It is said that as she approached the gates of Heaven, she heard a cry for help, turned immediately back, and vowed that she would stay on Earth to do all she could to ease our suffering.

She vowed she would not enter Heaven until everyone all could go with her.

In sheer numbers of humanity, Kwan Yin is the most venerated Goddess of all. She is revered by all Chinese (over 2 billion people), most Japanese, and all Buddhists everywhere, due to her unconditional love, compassion and mercy.

She is generally regarded by many as the protector of women and children. By this association she is also seen as a fertility goddess capable of granting children. She is also seen as the champion of the unfortunate, the sick, the disabled, the poor, and those in trouble.

The maritime people of China regard her as the protector of fisherman, sailors and generally people who are out at sea. Recently she has been called a sort of Asian St. Christopher, as the protector of air travellers.
Chinese business people and traders venerate her as a Goddess of Luck and Fortune, as well as anyone who believes in her.
Centuries ago, enlightened Buddhist monks wrote 100 verses that they attribute to their meditations on Kwan Yin, and believe these actually came from her by inspiration.

These form the basis of an oracle that is consulted with great regularity in Asian culture. In a bamboo cup, 100 numbered slivers of bamboo are shaken until one falls out. This number corresponds to one of the 100 poems of Kwan Yin, and reveals wise counsel and advice on your problems and necessary action you should take.
A Buddhist priest can interpret them for you, or as the poems are so exact, you can interpret them for yourself. The experience is quite calming and reassuring.
One does not have to be a Buddhist to consult Kwan Yin and her Oracle, and if you believe in the Tarot, Astrology or other forms of divination, you will find the Oracle of Kwan Yin very helpful and enlightening.

MORE FREE INFO

On eastern thought and more on new age thought visit our website for a huge resource of articles, features and downloads and at http://www.net-planet.org/index.html

Mysql Server Crash Leads To Database Corruption

June 22nd 2015 Posted at Databases
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MySQL is a popular and advanced RDBMS (Relational Database Management System) that offers efficient reliability of your precious data. However, in some situations, MySQL server might crash due to some database problems and encounter severe data loss. Corruption renders your database unusable and inaccessible. Application cannot recognize the database. At this point, you need to restore your significant data from the most recent backup. However, if backup is not available, MySQL database recovery becomes need of hour.

When MySQL application crashes, the database becomes un-mountable. At this point, server throws numerous error messages that help you identify the cause of this issue. As a practical example of this problem with MySQL database management system, you might encounter the below error message when you try to mount the database-

Version: ‘5.0.20-nt’ socket: ” port: 3306 MySQL Community Edition (GPL)
InnoDB: Error: page n:o stored in the page read in is 2719, should be 3383!
InnoDB: Error: page n:o stored in the page read in is 2720, should be 3384!
InnoDB: Database page corruption on disk or a failed
InnoDB: file read of page 3384.
InnoDB: You may have to recover from a backup.
060725 6:59:18 InnoDB: Page dump in ascii and hex (16384 bytes):

When this error occurs, you cannot access any of the database records. The issue most frequently occurs with the databases based on InnoDB storage engine and you need to repair MySQL database to get your data recovered.

Root of the issue
You may encounter this behavior of MySQL Server due to database corruption. Corruption might occur due to various reasons, which include virus infection, improper system shutdown, operating system malfunction, user errors, and application crash.

Solution
Try out the below MySQL repair methods to recover MySQL database in such cases-

As stated in the above error message, you can restore database from the most recent backup. It is the most efficient MySQL recovery technique.
In case an adequate and updated backup is not in place, you are required to opt for alternative MySQL database recovery solution, which is to use MySQL repair software.

MySQL recovery software are designed to thoroughly scan entire database and recover MySQL database to a working state. They enable you to repair MySQL database in an easy and safe way with interactive user interface and read-only design.

Stellar Phoenix Database Recovery for MySQL is the most effective solution to repair and restore damaged databases of both InnoDB and MyISAM storage engines.

Mark Willium is a database expert doing research on MySQL database repair software. For more details visit: http://www.mysql-database-recovery.com/

Oracle Training Program-how To Prepare For Oracle Certification Exam

June 22nd 2015 Posted at Databases
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The Oracle certification is a professional certification program. There are three levels of Oracle Certification in several disciplines: Oracle Certified Associate (OCA), Oracle Certified Professional (OCP), and Oracle Certified Master (OCM). The company provides the best online Oracle training program for Oracle Certified Associate (OCA) and Oracle Certified Professional (OCP) with which you can give a boost to your IT career.

The Oracle Certification begins with the Associate level, which recognizes achievement in mastering introductory Oracle skills. The Oracle Certified Associate (OCA) tier was designed to provide for an entry-level certification designation for the Oracle platform. An Oracle Certified Associate (OCA) demonstrates a solid understanding of the foundation skills of a given job role, which can be applied at an apprentice or entry level. Individuals who hold this credential have demonstrated that they have mastered introductory Oracle skills and can perform foundation level tasks. It is necessary to hold this certification before moving on to the next level of Oracle certification which is Oracle Certified Professional (OCP) level.

By becoming an Oracle Certified Professional (OCP) one demonstrates one understands full range of skills required by Oracle professionals in the chosen job role. An OCP is in high demand in today’s marketplace. An OCP Certification raises ones visibility and increases access to the industry’s most challenging opportunities. The demand for professionals in the information technology (IT) industry is high, and the competition for jobs is intense. Individuals experienced or new to the profession, needs to know what skills make them attractive to employers. Employers look for ways to select prospective employees who have the solid foundation of skills needed for effective performance. And the company provides with the best training program for clearing such exams.

The true value of earning these certifications is increased opportunity. With more opportunity come career growth and higher pay. The oracle OCA program give Technology professionals with little or no Oracle experience obtain the knowledge and skills necessary to break into the highly lucrative and challenging Oracle profession. “Oracles predominant OCP certification showed 28 percent more money than the average certification program measured. The company provides the Oracle training and Certification for OCA and OCP in Oracle’s 10g or 11i platforms. The company by provides a library of oracle books, labs, mentoring, monthly articles and test preps makes one fully equipped to clear the certification exams whose importance has already been explained above. The company also provides with the Hassle Free (no question asked) Return Policy if one is not satisfied with the product.

Frank is an expert author. Who writes on different technical educational programs. He specially writes on Oracle Certification or Oracle training

Recover Crashed Tables In Mysql Database

June 21st 2015 Posted at Databases
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MySQL is a popular database management system, a most widely used for web databases, offers efficient techniques to ensure absolute integrity of the database. When you start MySQLD (MySQL Server), it automatically examines all the database tables for integrity. MySQL Server also fixes the tables if they are marked as not closed properly or crashed. It backs up all the corrupted database tables and makes their entries in the error log. Though, it works in a number of cases, but cannot necessarily fix all the corruption issues and fails to recover MySQL database.

The MySQLD technique cannot repair MySQL database if it is severely damaged. As a practical scenario, where MySQL Server cannot handle the table corruption, you may encounter the below error message-

Got an error from thread_id=1, mi_dynrec.c:368

The above error message occurs when you start the MySQL server for accessing the database records that are stored in the MyISAM (MySQL database engine). After initialization, the server examines for integrity of all database tables and attempts to repair the damaged ones. MySQL Server logs this error in error log.

This problem occurs every time you start MySQL Server database, until you repair or remove the damaged tables. All the records that you have saved in MyISAM table become unusable after this error.

Root of the problem:

There are numerous reasons of MySQL database corruption, such as virus infection, unexpected system shutdown, application malfunction, and subsequent editing of the database. MySQL server cannot recognize the database after corruption and thus you face this problem.

Solution:

In order to perform MySQL database recovery in such situations, follow the underwritten steps-

Check the extent of damage to the table using the CHECK TABLE command. Once the corrupt table is identified, use REPAIR TABLE command to repair MySQL database table.
If you have an updated and valid backup of the damaged table, restore it. Backup is the best way to perform MySQL recovery.
In case you do not have a proper backup of your database, you are required to look for alternative MySQL repair solution, which is to use MySQL database recovery software.

MySQL recovery software are particularly designed to repair MySQL database with highly-advanced scanning techniques. They safely repair MySQL database with read-only and non-destructive conduct.

Stellar Phoenix Database Recovery for MySQL is the comprehensive SQL database recovery software that works in all corruption scenarios, with both MyISAM and InnoDB storage engines.

My name is Mark Willium, I have done Ph.D in computer science and currently doing research on how to repair mysql database.

Oracle Certification 1Z0-102 Exam: Oracle Certification Learning Guide

June 20th 2015 Posted at Databases
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In aiming to pass Oracle 1Z0-102 test, it is advisable for professionals to be trained from legit training center. This would be a candidate’s advantage. They can get more experience and knowledge to it since only master and experts will give them trainings. Before you take the exam, you have to read and understand first the syllabus of the exam, as it will aid you to have a clearer knowledge in knowing the program. Most of the exam details as well as other matters are available in oracle site. Candidates can use various learning process and can opt for the best resources available.

If candidates planned to take trainings direct from the Oracle University, professional Oracle lecturers and trainers will guide them. As Oracle is one multinational organization, they have the experience in managing people in different parts of the globe, thus candidates can simply locate oracle centers close to their residence. There are also Oracle 1Z0-102 study guides online, but you have to be choosy in looking for the one that will give you enough study materials.

After you complete the exam, you will get certification from the Oracle within four to eight weeks from results published date. Certified professionals who succeed in taking the exam can perform some tasks which are required for the Oracle product and solution. You can also find different aspects composed in Oracle exams like security and portals architecture, application building, and handling exceptions, etc. Thus, passing these certifications will definitely help candidates to achieve great height of careers. Oracle products are used commonly for different purposes and thus, it can be very useful for candidates to have valid certifications.

Registration procedures for Oracle 1Z0-102 test can be performed online. Candidates need to follow the instructions of registration. Every exam may cost around 160 dollars and they must plan for the test after fee is made. Scheduling of the exam date and sessions can be made according to the candidate’s payment and comfort, which can be placed online. They will receive recognition from the organization through email.

Oracle is one leading multinational business that provides valuable certifications like Oracle 1Z0-102 Oracle Weblogic Server 11g: System Administration I. From this certification, it is likeable for IT professionals to succeed in the IT field. However, for you to pass the exam you need hard work and determination in reparsing for the test and you ought to know its impotence.

Author of this article highly recommends ExamCertify questions and answers material for 1Z0-102 and 1Z0-109 which is just only. Visit to grab your copy today!

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