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1Z0-883 MySQL 5.6 Database Administrator

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1Z0-883 exam Dumps Source : MySQL 5.6 Database Administrator

Test Code : 1Z0-883
Test cognomen : MySQL 5.6 Database Administrator
Vendor cognomen : Oracle
: 100 actual Questions

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Oracle MySQL 5.6 Database Administrator

Percona challenges Oracle with alternate MySQL release | killexams.com actual Questions and Pass4sure dumps

Percona continues to nip at Oracle's heels, releasing a free version of the open-source MySQL 5.6 database with advanced aspects akin to ones in Oracle's paid commercial enterprise edition.

The newly launched Percona Server 5.6 facets scalability, availability, backup and protection aspects akin to these present in Oracle's MySQL 5.6 commercial enterprise edition, which Oracle makes purchasable simplest to purchasers who purchase a aid contract.

Percona Server 5.6, now accessible as a free download, furthermore comprises total of the functionality of Oracle's group edition of MySQL 5.6, released in February.

Percona Server is designed to travail with functions that could exist too demanding for MySQL itself to assist, mentioned Peter Zaitsev, founder and CEO of Percona, a MySQL consultancy and utility company.

as an example, Percona Server 5.6 is in a position to exploit up to 1,000 concurrent threads, whereas the regular version of MySQL starts to abate dealing with round a hundred and fifty threads, in keeping with Percona. Oracle has additionally configured MySQL to tackle giant numbers of lively threads simultaneously, although a grandiose deal of the travail will furthermore exist found best in the company's commerce edition of MySQL, in accordance with Zaitsev. extra open threads means the database can handle extra incoming records requests at once, a vital assign for databases powering heavily used internet software servers.

other points of the Oracle MySQL enterprise edition are duplicated via Percona as neatly.

the exhaust of the adjunct Percona XtraBackup application, additionally free, directors can develop plenary incremental backups of Percona Server information, in addition to maintain sizzling backups. via a plug-in, Percona Server presents an identical safety capabilities as Oracle's MySQL 5.6 commerce protection edition.

Percona Server 5.6 is in response to Oracle's MySQL 5.6 community version, and so it is interchangeable with Oracle's MySQL in lots of instances. as a result of MySQL's source code is accessible for others to develop exhaust of below a Gnu ordinary Public License, agencies apart from Oracle -- which manages the MySQL codebase -- can compile and release their own types of the database.

Percona Server additionally aspects a brace of capabilities not present in Oracle's MySQL, similar to a efficiency schema that may supply person and table undertaking statistics. The enterprise additionally presents a question log that can dissect performance of the database software devoid of unduly slowing efficiency.

With more than 2,000 valued clientele, Percona makes funds via offering MySQL support, practising and consultations, whereas releasing its personal models of MySQL and connected back application.

in line with a 2013 survey by way of 451 research, about 62 % of MySQL users install the Oracle edition, about 14 percent exhaust a NoSQL fork of MySQL called MariaDB, and 15 p.c exhaust Percona's edition. Percona Server has been downloaded about seven-hundred,000 times, in line with the business.

Joab Jackson covers commerce utility and time-honored know-how breaking tidings for The IDG tidings provider. ensue Joab on Twitter at @Joab_Jackson. Joab's e-mail tackle is Joab_Jackson@idg.com


Oracle Releases Open source MySQL 5.6 with NoSQL features | killexams.com actual Questions and Pass4sure dumps

Over the route of the final two years, Oracle has been challenging at travail building and enhancing MySQL 5.6. nowadays at long last, that challenging travail has arrive to fruition with the regularly occurring availability of the open supply MySQL 5.6 database.

the primary MySQL 5.6 preview debuted in July of 2011, whereas the ultimate legitimate leading MySQL unencumber changed into edition 5.5 which was launched on the conclude of 2010.

plenty has modified within the database market in the two years considering the MySQL 5.5 free up. For one, the rise within the popularity of NoSQL databases has escalated in fresh years. The NoSQL fashion isn't one which Oracle is ignoring.

"SQL is a very bendy language that allows you to Do lots of things that are not viable via an instantaneous NoSQL classification method," Tomas Ulin, vice chairman of MySQL Engineering at Oracle instructed InternetNews. "So we've tried to exist fragment of the better of each worlds with the complete dash of SQL to Do complicated queries and on the selfsame time we're introducing a NoSQL access ilk API."

Ulin brought that the NoSQL API is to the selfsame information set, so a database administrator can retain total of the issues which are expected for an everyday database. The NoSQL API in MySQL 5.6 gives up to a 9x growth in precipitate for sure styles of queries. The MySQL NoSQL API is based on the trade commonplace memcached API.

efficiency features

The NoSQL layer is never the handiest a fragment of MySQL 5.6 that might exist quicker for clients that MySQL 5.5. in line with Oracle, MySQL 5.6 gives as much as 230 p.c evolution in Transactional and browse most effectual Throughput.

Ulin explained that the massive performance profit has been executed by means of code rewrite of the InnoDB engine that reduced overhead.

That code refactoring furthermore makes it viable for newfangled scale for MySQL. MySQL 5.6 is now capable of scale total of the option to forty eight core servers.

online Schema adjustments

a further big newfangled potential set in MySQL 5.6 offers with more desirable availability points.

online schema alterations enable database directors to without problems add and drop columns. The on-line schema changes potential is technically pointed out because the on-line records Definition Language (DDL) set of operations. With DDL table amendment can furthermore exist made whereas functions are linked.

"It skill a lot to clients to exist able to trade their database schema," Ulin said. "we believe a schema-less outfit here so they won't believe to lift their tables or facts offline whereas doing an valuable alter table operation."

Migration

For present MySQL clients moving from MySQL 5.5 to the brand newfangled 5.6 are usually not a particularly painful chore for many databases.

"In commonplace, it would simply exist a weigh of stopping the server, operating the upgrade script and then starting the database over again," Ulin pointed out.

a further approach to update a excessive-availabilitiy replicated MySQL database cluster is to supersede the slave node first, then failover the grasp to the slave, then update the previous master.

Going a step extra Oracle additionally has a technology referred to as Workbench that has each open supply and commercial types. Workbench has a migration wizard with a purpose to additionally permit migration from distinctive databases including SQL Server over to the MySQL 5.6 release.

 

 

Sean Michael Kerner is a senior editor at InternetNews.com, the tidings carrier of the IT company side network, the community for technology specialists comply with him on Twitter @TechJournalist.


Oracle begins travail on MySQL 5.6 | killexams.com actual Questions and Pass4sure dumps

With travail below way to construct the next edition of the MySQL relational database software, Oracle is focusing tons of its efforts on improving the software's efficiency and replication capabilities, based on an Oracle govt overseeing the application's building.

The company's developers are making grandiose improvements to the core InnoDB storage engine, which may silent develop the database outfit more responsive. also, the means to copy a database to a further area, always valuable for backup and calamity restoration, is being more suitable in a few approaches, pointed out Tomas Ulin, Oracle's MySQL vice chairman of engineering.

Such travail is being applauded in the MySQL group.

"From an engineering standpoint, Oracle is doing the best travail on MySQL it truly is ever been completed," stated Baron Schwartz, chief performance architect at Percona, which sells an optimized version of the database utility.

Marten Mickos, ex-CEO of MySQL AB, has furthermore praised Oracle's efforts with MySQL. MySQL AB turned into bought in 2008 via solar Microsystems, which itself was bought by means of Oracle remaining yr.

Oracle launched the final version of MySQL, edition 5.5, in December. The company has not set a unencumber date for the subsequent edition, but final month Oracle launched the first preview, or building milestone, edition 5.6.

a wonderful deal of the travail now under approach is going into making the database sooner, Ulin referred to. The InnoDB storage engine and the optimizer believe both been revamped for sooner efficiency. The optimizer, as an example, can redeem its algorithms for a specific query, should silent the administrator exist joyful with the efficiency of that question under the optimizer.

Schwartz said that this version of MySQL implements one of the vital performance enhancements his commerce built into its personal edition of MySQL, called Percona Server. "This potential they might not should hold these points to any extent further," Schwartz stated.

One such role being mulled for inclusion in 5.6 is the capacity to "pre-warm the buffer pool cache," Schwartz pointed out. A database can construct up a cache of frequently consulted entries. When a server is shut down, besides the fact that children, this cache disappears, and, upon restarting, it could lift a number of hours to construct the cache returned up. meanwhile, besides the fact that children, users may furthermore suffer slower-than-usual response from the database.

"here is a huge problem with servers with loads of reminiscence," Schwartz pointed out. Pre-warming the cache with no pains capability the database can recreate a cache after it is rebooted. It keeps an inventory of total the required entries, which it may fetch birthright now from the database in an methodical manner.

The enterprise is undertaking rather sort of of labor on MySQL's replication capabilities, which immediately reproduction databases to secondary locations.

With this free up, replication is being speeded up although multithreaded assist. Multithreaded replication is "an fully killer characteristic," Schwartz mentioned. When statistics is replicated on a backup server, the utility can now spawn discrete threads on the backup server to copy the material in parallel.

In past types, "you may absolutely overpower a duplicate with even a moderately powered grasp server. it's been a sober rigor for a long time," Schwartz pointed out.

additionally on the replication front, the enterprise has introduced time-extend replication, the plot the copying manner will furthermore exist delayed by a preset length of time, which can exist facile in these cases the plot an administrator makes a strict mistake, reminiscent of inadvertently losing a database desk. because the replication isn't instantaneous, the administrator can fetch the replicated dropped table before it vanishes too.

Ulin said the company plans to liberate some more milestone beta releases earlier than the remaining launch. additionally, the company is releasing diverse preview models of MySQL, each one implementing a probably newfangled function. This strategy can ease the job of checking out the application before putting it into a creation ambiance, Schwartz referred to. "If i wanted to examine a specific feature, i will exist able to stare at various that devoid of being concerned about the believe an impact on of other facets," Schwartz spoke of.

typical, Schwartz is blissful through the travail that Oracle is doing.

past releases of MySQL tended to believe a lot of bugs, which then later had to exist patched, he spoke of. edition 5.5, besides the fact that children, which turned into largely overseen by way of Oracle, became a immaculate unencumber and Schwartz expects that edition 5.6 will exist strong as well.

"Oracle is doing decent, formal utility engineering," he said.

Joab Jackson covers enterprise software and established technology breaking information for The IDG tidings service. keep Joab on Twitter at @Joab_Jackson. Joab's electronic mail handle is Joab_Jackson@idg.com

Copyright © 2011 IDG Communications, Inc.


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MySQL 5.6 Database Administrator

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Oracle Releases Open Source MySQL 5.6 with NoSQL Features | killexams.com actual questions and Pass4sure dumps

Over the course of the final two years, Oracle has been arduous at travail building and improving MySQL 5.6. Today at long last, that arduous travail has arrive to fruition with the general availability of the open source MySQL 5.6 database.

The first MySQL 5.6 preview debuted in July of 2011, while the final official main MySQL release was version 5.5 which was released at the conclude of 2010.

A lot has changed in the database market in the two years since the MySQL 5.5 release. For one, the rise in the popularity of NoSQL databases has escalated in recent years. The NoSQL trend is not one that Oracle is ignoring.

"SQL is a very supple language that allows you to Do a lot of things that are not viable through a direct NoSQL ilk approach," Tomas Ulin, vice president of MySQL Engineering at Oracle told InternetNews. "So we've tried to connect the best of both worlds with the plenary power of SQL to Do complex queries and at the selfsame time we're introducing a NoSQL access ilk API."

Ulin added that the NoSQL API is to the selfsame data set, so a database administrator can preserve total the things that are expected for a regular database. The NoSQL API in MySQL 5.6 provides up to a 9x improvement in precipitate for sure types of queries. The MySQL NoSQL API is based on the industry benchmark memcached API.

Performance gains

The NoSQL layer isn't the only fragment of MySQL 5.6 that will exist faster for users that MySQL 5.5. According to Oracle, MySQL 5.6 provides up to 230 Percent Improvement in Transactional and Read Only Throughput.

Ulin explained that the gigantic performance gain has been achieved via code rewrite of the InnoDB engine that reduced overhead.

That code refactoring furthermore enables newfangled scale for MySQL. MySQL 5.6 is now able to scale total the way to 48 core servers.

Online Schema Changes

Another gigantic newfangled capability set in MySQL 5.6 deals with enhanced availability features.

Online schema changes enable database administrators to easily add and drop columns. The online schema changes capability is technically referred to as the online Data Definition Language (DDL) set of operations. With DDL table modification can exist made while applications are connected.

"It means a lot to users to exist able to change their database schema," Ulin said. "We believe a schema-less system here so they don't believe to lift their tables or data offline while doing a huge alter table operation."

Migration

For existing MySQL users moving from MySQL 5.5 to the newfangled 5.6 will not exist a particularly painful chore for most databases.

"In general, it should just exist a matter of stopping the server, running the upgrade script and then starting the database over again," Ulin said.

Another way to update a high-availabilitiy replicated MySQL database cluster is to update the slave node first, then failover the master to the slave, then update the previous master.

Going a step further Oracle furthermore has a technology called Workbench that has both open source and commercial versions. Workbench has a migration wizard that will furthermore enable migration from different databases including SQL Server over to the MySQL 5.6 release.

 

 

Sean Michael Kerner is a senior editor at InternetNews.com, the tidings service of the IT commerce Edge Network, the network for technology professionals ensue him on Twitter @TechJournalist.


Percona challenges Oracle with alternate MySQL release | killexams.com actual questions and Pass4sure dumps

Percona continues to nip at Oracle's heels, releasing a free version of the open-source MySQL 5.6 database with advanced features similar to ones in Oracle's paid enterprise edition.

The newly released Percona Server 5.6 features scalability, availability, backup and security features similar to those found in Oracle's MySQL 5.6 Enterprise Edition, which Oracle makes available only to customers who purchase a back contract.

Percona Server 5.6, now available as a free download, furthermore includes total the functionality of Oracle's community edition of MySQL 5.6, released in February.

Percona Server is designed to travail with applications that would exist too demanding for MySQL itself to support, said Peter Zaitsev, founder and CEO of Percona, a MySQL consultancy and software company.

For instance, Percona Server 5.6 is able to manage up to 1,000 concurrent threads, whereas the benchmark version of MySQL starts to bog down handling around 150 threads, according to Percona. Oracle has furthermore configured MySQL to handle big numbers of active threads simultaneously, though much of the travail can exist found only in the company's enterprise edition of MySQL, according to Zaitsev. More open threads means the database can handle more incoming data requests at once, an valuable assign for databases powering heavily used Web application servers.

Other features of the Oracle MySQL Enterprise Edition are duplicated by Percona as well.

Using the adjunct Percona XtraBackup program, furthermore free, administrators can develop plenary incremental backups of Percona Server data, as well as maintain tart backups. Through a plug-in, Percona Server offers similar security capabilities as Oracle's MySQL 5.6 Enterprise Security edition.

Percona Server 5.6 is based on Oracle's MySQL 5.6 Community Edition, and so it is interchangeable with Oracle's MySQL in many circumstances. Because MySQL's source code is available for others to exhaust under a Gnu general Public License, companies other than Oracle -- which manages the MySQL codebase -- can compile and release their own versions of the database.

Percona Server furthermore features a number of capabilities not found in Oracle's MySQL, such as a performance schema that can provide user and table activity statistics. The company furthermore offers a query log that can dissect performance of the database software without unduly slowing performance.

With more than 2,000 customers, Percona makes money by offering MySQL support, training and consultations, while releasing its own versions of MySQL and related back software.

According to a 2013 survey by 451 Research, approximately 62 percent of MySQL users deploy the Oracle version, about 14 percent exhaust a NoSQL fork of MySQL called MariaDB, and 15 percent exhaust Percona's version. Percona Server has been downloaded about 700,000 times, according to the company.

Joab Jackson covers enterprise software and general technology breaking tidings for The IDG tidings Service. ensue Joab on Twitter at @Joab_Jackson. Joab's e-mail address is Joab_Jackson@idg.com

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MySQL 5.6 tackles NoSQL competitors | killexams.com actual questions and Pass4sure dumps

With MySQL 5.6, released Tuesday, Oracle has updated the open-source database to develop it more competitive with NoSQL data stores such as MariaDB or Cassandra.

"We're in constant dialogue with their customers and users, and they've shown interest in the NoSQL technologies," said Tomas Ulin, Oracle vice president of MySQL engineering. Oracle hopes MySQL can offer NoSQL speeds and scalability while silent being a fully relational database.

"We can combine the best worlds. You don't believe to split your data sets or believe two databases," Ulin said.

During evolution of this latest release, which lasted about two years, Oracle accelerated travail on a number of enhancements that should develop MySQL more competitive with NoSQL data stores, which believe grown in popularity over the past few years.

MySQL now offers a way to more quickly access data, by way of the Memcached API (application programming interface). MySQL doesn't actually exhaust Memcached but harnesses its API -- close to many system administrators -- as an interface to fetch data directly from the database, without going through the database engine. The approach can deliver data up to nine times more quickly, for data that does not exigency to exist parsed by SQL.

Another newfangled feature that should give MySQL a bit more parity with NoSQL is the skill to execute DDL (Data Definition Language) operations without taking offline the database tables being changed. Administrators can alter a schema, add or drop a column, or rename a column, total without taking the database offline. NoSQL products believe been praised for these sorts of dynamic schema updates, which MySQL will now offer as well.

Other newfangled features in MySQL 5.6 involve the skill to optimize subqueries, or nested queries, which can otherwise lift prohibitively long to execute. The diagnostics are more comprehensive, through an expanded warrant query. The database furthermore offers an index for plenary text searches, so searches can exist done within big fields of text without actually doing a plenary table scan, which takes longer.

For high availability, MySQL 5.6 has global transaction identifiers, which simplify the process of failing over to a backup database server. The MySQL Workbench now includes a set of Python code that monitors master-slave database sets and can automatically switch operations to the backup server should the primary database fail.

The software can now flee across 48-core servers, up from 32 cores in MySQL 5.5. While not many are running the database across such big systems, Oracle anticipates they will exist in years to come. "We exigency to exist a minute bit ahead of the curve when scaling out," Ulin said.

Ulin wouldn't avow what changes are coming in MySQL 5.7, aphorism the evolution team is silent in the early planning stages.

Joab Jackson covers enterprise software and general technology breaking tidings for The IDG tidings Service. ensue Joab on Twitter at @Joab_Jackson. Joab's e-mail address is Joab_Jackson@idg.com



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