|Exam Name||:||IBM Information Management DB2 10 pureScale Technical Mastery Test v2|
|Questions and Answers||:||34 Q & A|
|Updated On||:||February 21, 2019|
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000-N26 exam Dumps Source : IBM Information Management DB2 10 pureScale Technical Mastery Test v2
Test Code : 000-N26
Test Name : IBM Information Management DB2 10 pureScale Technical Mastery Test v2
Vendor Name : IBM
Q&A : 34 Real Questions
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In September 2018, IBM introduced a brand new product, IBM Db2 AI for z/OS. This synthetic intelligence engine displays records entry patterns from executing SQL statements, makes use of desktop gaining knowledge of algorithms to opt for premiere patterns and passes this tips to the Db2 question optimizer to be used by using subsequent statements.laptop researching on the IBM z Platform
In may of 2018, IBM introduced version 1.2 of its laptop learning for z/OS (MLz) product. here's a hybrid zServer and cloud utility suite that ingests efficiency data, analyzes and builds fashions that characterize the fitness popularity of a considerable number of indicators, screens them over time and provides actual-time scoring capabilities.
a number of facets of this product providing are aimed at helping a group of model developers and bosses. as an instance:
This machine gaining knowledge of suite turned into at first aimed at zServer-based analytics purposes. one of the first obtrusive choices turned into zSystem efficiency monitoring and tuning. system administration Facility (SMF) facts that are immediately generated by way of the working system provide the uncooked records for gadget resource consumption equivalent to primary processor usage, I/O processing, memory paging and so on. IBM MLz can bring together and store these information over time, and build and instruct models of device conduct, score those behaviors, identify patterns no longer simply foreseen by means of people, strengthen key efficiency symptoms (KPIs) and then feed the mannequin results returned into the equipment to affect system configuration adjustments that may improve efficiency.
The subsequent step became to put in force this suite to analyze Db2 performance data. One answer, called the IBM Db2 IT Operational Analytics (Db2 ITOA) solution template, applies the laptop getting to know know-how to Db2 operational records to gain an figuring out of Db2 subsystem health. it may possibly dynamically build baselines for key efficiency indications, provide a dashboard of these KPIs and provides operational body of workers true-time insight into Db2 operations.
whereas usual Db2 subsystem efficiency is a vital component in ordinary application health and performance, IBM estimates that the DBA aid body of workers spends 25% or more of its time, " ... fighting access direction problems which cause performance degradation and service influence.". (See Reference 1).AI involves Db2
consider the plight of modern DBAs in a Db2 atmosphere. In modern IT world they have to help one or greater huge data purposes, cloud application and database functions, application installation and configuration, Db2 subsystem and application efficiency tuning, database definition and management, catastrophe recovery planning, and greater. query tuning has been in existence in view that the origins of the database, and DBAs are continually tasked with this as neatly.
The heart of query path evaluation in Db2 is the Optimizer. It accepts SQL statements from purposes, verifies authority to entry the records, experiences the places of the objects to be accessed and develops a listing of candidate records access paths. These entry paths can encompass indexes, table scans, numerous desk join strategies and others. in the information warehouse and large statistics environments there are usually further choices attainable. One of these is the existence of abstract tables (now and again called materialized question tables) that include pre-summarized or aggregated records, therefore allowing Db2 to evade re-aggregation processing. yet another alternative is the starjoin access path, average within the information warehouse, the place the order of desk joins is modified for efficiency reasons.
The Optimizer then studies the candidate access paths and chooses the access course, "with the bottom charge." charge during this context ability a weighted summation of useful resource usage including CPU, I/O, memory and other resources. ultimately, the Optimizer takes the lowest cost entry path, shops it in memory (and, optionally, in the Db2 directory) and begins access route execution.
big facts and statistics warehouse operations now encompass application suites that enable the business analyst to make use of a graphical interface to build and manipulate a miniature data mannequin of the information they want to analyze. The programs then generate SQL statements based on the users’ requests.
The difficulty for the DBA
to be able to do first rate analytics on your distinctive information retailers you need a superb understanding of the records requirements, an realizing of the analytical services and algorithms obtainable and a high-performance statistics infrastructure. unfortunately, the quantity and placement of statistics sources is increasing (each in size and in geography), statistics sizes are growing, and purposes continue to proliferate in quantity and complexity. How may still IT managers aid this atmosphere, specially with the most skilled and mature personnel nearing retirement?
consider also that a big part of cutting back the total charge of ownership of those techniques is to get Db2 functions to run quicker and extra correctly. This continually interprets into using fewer CPU cycles, doing fewer I/Os and transporting less information throughout the network. on the grounds that it's commonly problematic to even identify which functions might advantage from performance tuning, one approach is to automate the detection and correction of tuning considerations. here is the place computer learning and synthetic intelligence can be used to top notch impact.Db2 12 for z/OS and synthetic Intelligence
Db2 edition 12 on z/OS uses the computing device learning facilities outlined above to accumulate and store SQL query textual content and entry path details, in addition to genuine performance-linked ancient assistance corresponding to CPU time used, elapsed times and outcome set sizes. This providing, described as Db2 AI for z/OS, analyzes and outlets the information in computing device learning fashions, with the model analysis outcomes then being scored and made available to the Db2 Optimizer. The subsequent time a scored SQL observation is encountered, the Optimizer can then use the mannequin scoring records as input to its access route option algorithm.
The outcome may still be a reduction in CPU consumption because the Optimizer uses mannequin scoring input to choose better entry paths. This then lowers CPU expenses and speeds application response times. a significant talents is that the use of AI software doesn't require the DBA to have information science capabilities or deep insights into query tuning methodologies. The Optimizer now chooses the most fulfilling entry paths based now not best on SQL question syntax and statistics distribution statistics but on modelled and scored ancient performance.
This can be primarily vital in case you shop data in varied places. for instance, many analytical queries against large information require concurrent access to definite statistics warehouse tables. These tables are frequently known as dimension tables, and they comprise the records elements continually used to handle subsetting and aggregation. as an example, in a retail environment accept as true with a table called StoreLocation that enumerates each keep and its vicinity code. Queries in opposition t store income statistics may also need to aggregate or summarize sales through vicinity; therefore, the StoreLocation desk can be used by some big information queries. in this environment it is typical to take the dimension tables and copy them continually to the huge data utility. within the IBM world this region is the IBM Db2 Analytics Accelerator (IDAA).
Now believe about SQL queries from both operational purposes, information warehouse clients and big facts company analysts. From Db2's viewpoint, all these queries are equal, and are forwarded to the Optimizer. despite the fact, within the case of operational queries and warehouse queries they should still absolutely be directed to entry the StoreLocation desk within the warehouse. then again, the question from the business analyst against huge records tables should likely entry the replica of the desk there. This results in a proliferations of abilities access paths, and more work for the Optimizer. luckily, Db2 AI for z/OS can supply the Optimizer the tips it needs to make smart access route decisions.how it Works
The sequence of events in Db2 AI for z/OS (See Reference 2) is frequently right here:
There are additionally various user interfaces that supply the administrator visibility to the popularity of the gathered SQL remark performance facts and model scoring.summary
IBM's desktop studying for zOS (MLz) offering is getting used to tremendous impact in Db2 edition 12 to enrich the performance of analytical queries as well as operational queries and their linked functions. This requires administration attention, as you should determine that your business is prepared to eat these ML and AI conclusions. How will you measure the expenses and merits of using laptop learning? Which IT support group of workers have to be tasked to reviewing the outcomes of mannequin scoring, and perhaps approving (or overriding) the effects? How will you evaluate and justify the assumptions that the utility makes about entry path selections?
In other phrases, how well were you aware your records, its distribution, its integrity and your existing and proposed entry paths? this can examine where the DBAs spend their time in supporting analytics and operational utility performance.
# # #
John Campbell, IBM Db2 unusual EngineerFrom "IBM Db2 AI for z/OS: raise IBM Db2 utility efficiency with laptop gaining knowledge of"https://www.worldofdb2.com/pursuits/ibm-db2-ai-for-z-os-boost-ibm-db2-utility-efficiency-with-ma
Db2 AI for z/OShttps://www.ibm.com/support/knowledgecenter/en/SSGKMA_1.1.0/src/ai/ai_home.html
IBM unveiled a brand new version of its flagship information integration product -- IBM InfoSphere suggestions Server eight.5 -- at its advice on Demand convention closing week in Las Vegas. big Blue additionally took the wraps off the latest edition of its mainstay database management device, IBM DB2.
SearchDataManagement.com became on the convention and sat down with Bernie Spang, IBM’s director of guidance management product method, to get greater details in regards to the new releases. Spang talked about the heritage of InfoSphere tips Server and DB2’s new capabilities, and he explained some of the the explanation why IBM is so attracted to buying information warehouse equipment vendor Netezza. listed here are some excerpts from that conversation:
could you give me a short historical past lesson on the IBM InfoSphere product line?
Bernie Spang: It definitely has multifaceted origins. The information stage and exceptional stage, cleaning and ETL capabilities come from the Ascential acquisition a few years ago. The federation and replication capabilities that are a part of InfoSphere counsel Server have a heritage again in IBM under different names at diverse instances.
What are one of the crucial new capabilities in InfoSphere assistance Server 8.5?
Spang: some of the exciting issues in regards to the InfoSphere advice Server is the tool set that comes along with it for accelerating the construction of integration jobs, in addition to new fast-track capabilities and new company thesaurus capabilities [that] allow the collaboration between company and IT on what the meaning of facts is and how it flows together.
what's the brand new InfoSphere Blueprint Director?
Spang: That offers clients the ability to trap the optimal practices for designing and building and laying out an integration job to make sure that you’re basically in response to enterprise needs and you’re pulling the correct tips together except they’re within the approach. It’s an extra layer of collaboration that we’ve built into the product, and it enables clients to peer the great metrics associated with every piece of statistics as it moves during the system.
What does Blueprint Director appear to be to the conclusion consumer?
Spang: It’s a visible ambiance where you’re laying out the mixing and you’re defining it after which which you could use the quickly-music skill to generate the ETL jobs. It’s that visible toolset for defining your integration venture. And it ties with the enterprise thesaurus, where the company clients and IT are agreeing on the definition of terms.
What facets have you added in the new edition of DB2?
Spang: IBM DB2 edition 10 is a new product that we’re offering this week. [It offers] out-of-the-field efficiency advancements as much as 40% for some workloads [and] more suitable scalability. The different wonderful thing is a new capability that we’re calling DB2 time trip query – the potential to question information within the present, during the past and in the future. in case you’ve loaded suggestions, like new pricing counsel for next quarter, which you can do queries as if it had been subsequent quarter. if in case you have company agreements or policies which are over a time period, that you may do queries sooner or later and base it on how the policies should be in impact at the moment. companies already do this today, but generally by writing software code. by means of pushing it down into the database application, we’re greatly simplifying the technique and greatly decreasing the volume of code.
IBM is in the method of acquiring Westboro, Mass.-based information warehouse appliance supplier Netezza and its container programmable gate array processor expertise. What precisely is the price of this know-how?
Spang: Processing pace is accomplishing the legal guidelines of physics [in terms of its] capacity to proceed to grow, while on the identical time the should process extra guidance and do extra transactions is starting to be unabated. So how do you get these next-generation performance improvements? you set the items together and tremendously optimize them for selected workloads. That skill you need to have the utility optimized for the hardware even all the way down to the processor degree. The box programmable gate array allows you to basically application at a chip level, [and that leads to] a lot greater speeds than having it written in software running on a normal-purpose processor.
October 17, 2007 15:15 ET
integrated solution From IBM and Lighthouse Meets Regulatory Compliance Challenges
LAS VEGAS, NV--(Marketwire - October 17, 2007) - IBM tips on Demand conference -- Northeast Utilities (NU), New England's greatest utility system, has chosen an integrated records administration answer from IBM (NYSE: IBM) and Lighthouse laptop capabilities, Inc., to fulfill its growing variety of records management, e-mail archiving and compliance necessities.
The integrated statistics management device will support NU reply to litigation and e-discovery regulatory compliance requirements by means of improved managing, securing, storing and archiving e mail messages and digital facts.
"Northeast Utilities looks to proceed the momentum moving ahead as our new records counsel management program evolves into a robust and a hit program. The synergies constructed with our IBM business partner Lighthouse laptop functions, and our technically proficient in-condo crew, have enabled us to correctly deploy and configure IBM's RM utility equipment. we're laying down a strong basis to achieve our strategic enterprise desires," pointed out Greg Yatrousis, Northeast Utilities' IT Product supervisor.
The newly carried out information administration equipment is expected to decrease NU's operating fees through decreasing the time and effort vital to retrieve information. The equipment also will guide NU's facts and counsel management guidelines by using picking the category and structure of corporate records, monitoring compliance with business and legal retention necessities for records, determining the custodians of record classes, and enforcing dependent protection requirements and user access according to legal and enterprise necessities.
The IBM application enabling NU to make use of suggestions as a strategic asset comprises: IBM DB2 content manager, IBM DB2 statistics supervisor, IBM DB2 document manager, IBM WebSphere counsel Integration, IBM CommonStore, IBM DB2 content material supervisor records Enabler, IBM content material supervisor On Demand.
About Northeast Utilities
Northeast Utilities operates New England's largest utility gadget serving greater than two million electric and herbal gas valued clientele in Connecticut, western Massachusetts and New Hampshire. NU has made a strategic choice to focus on regulated enterprise opportunities. For greater information talk over with www.nu.com
About Lighthouse computer services
Lighthouse desktop functions is a depended on IT marketing consultant to leading organizations right through the northeast. Lighthouse is an IBM Premier enterprise partner, and positioned number 228 in VARBusiness 2007 rating of the top 500 IT solution issuer establishments in the u . s .. Lighthouse is also winner of IBM's 2006 Beacon Award for usual Technical Excellence in a company accomplice. For more information visit www.LighthouseCS.com.
For more counsel on IBM's business content material management choices, visit http://www-306.ibm.com/software/facts/cm/
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I recently finished Stanford’s excellent free on-line course Introduction to Databases with Jennifer Widom. The course is a broad survey of database technology including XML, Relational Database Management Systems (RDBMS) from many angles (SQL forms the centerpiece of the course), OLAP (OnLine Analytical Processing) and NoSQL.
I was very impressed with the breadth of Widom’s approach to the subject: it was a major reason I decided to spend time on the course. Another strength is its nuts-n-bolts approach: some theoretical topics are covered but for the most part this is a course for practitioners. Finally, I particularly appreciated the extensive use of FOSS (Free and Open Source Software) in the course.
Why study databases? I will merely say that data is a core tool pervading the information resources of modern civilization. Databases are where data is housed. For example, the data constituting this blog is stored in a database and the same can be said for much (if not all) of the Internet. Databases are a profoundly vital, big picture subject.
Widom’s course is still open for enrollment in “archival mode” meaning you can watch the videos, work through the exercises, quizzes and exams, and track your progress, but the deadlines have expired and no more “Statements of Accomplishment” will be awarded (at least until the course is offered again). To complete the simple enrollment go to db-class.org and start learning about databases with FOSS today!
Although the course is broadly useful for anyone wanting to learn the basics of databases from a broad perspective, I found it to be particularly good for learning about the FOSS tools that can support database systems. So let’s start there.FOSS Tools Covered
For traditional RDBMS, the course uses PostgreSQL, SQLite, and MySQL. Widom mentions some limitations of each database (DB) in regards to the SQL (Structured Query Language) standard including important distinctions about using each system with triggers, transactions (PostgreSQL has the best support), Views (MySQL uses updatable views whereas PostgreSQL & SQLite use triggers to modify views), recursion (only PostgreSQL and only in newer versions), and OLAP (only MySQL supports with rollup).
On the XML side, I learned xmllint and SAXON for XML validation, querying and transformation. The course covers the basics of DTDs, XML Schema, XPath, XQuery and XSLT. I used xmllint, saxonb-xquery, and saxonb-xslt to work through the exercises (the searchable Q&A forum provides usage details).
Finally, for NoSQL there are two videos which survey the state of the art. There is some depth on the Map Reduce framework provided by Hadoop. Several other FOSS systems are briefly discussed: Cassandra, Voldemort, CouchDB, MongoDB, and more. The NoSQL portion of the course is a good overview of the technology, but there are no exercises and hence little depth of a concrete nature.
From a FOSS perspective, the course is exquisite: FOSS utilities were front and center for the duration and some guidance in using these tools is provided. Help was readily available: I answered a few questions in the Q&A forum to help people overcome hurdles and I used its search feature to overcome some of my own. In sum, studying this course will give you the lay of the land for FOSS database technology including some advice about the limitations and strengths of its best database tools.Stanford’s innovative platform for free on-line video courses
I am a big fan of so-called Open Educational Resources (OER) including free on-line video courses. Stanford’s Databases course is the 12th I’ve completed, but only the second in which I did a “deep dive” by reinforcing learning with exercises, quizzes and exams. In general, I use OER video courses as edutainment as I usually find the extra work too time-consuming: my goal is to broadly understand how the world works, not to build expertise in every subject I study! So, conceptually, I prefer the traditional form of video courses pioneered by MIT’s OpenCourseWare which in contrast with Stanford’s new approach might be called archived courses. Archived courses make the material available without (m)any social tools. So, working through the materials in traditional OER courses usually requires extra self-discipline and commitment (unless you just watch the videos for fun as I often do).
Stanford’s OER system, online at coursera.org, builds on the basic idea of OER video courses by adding deadlines, interactive feedback from automatically evaluated work, and some, including the Databases course, offer the ability to earn a “Statement of Accomplishment” for demonstrating basic proficiency. It is precisely these social enhancements that makes Stanford’s initiative so noteworthy. Together these social tools provide a shared experience with a clear set of tasks for a cohort of students working through the course at the same time.
The extra interactivity and the focus of deadlines give the Stanford approach to OER a special excitement and sense of goal accomplishment which is absent in archived courses. Even though I prefer the archived courses whose videos can be more entertaining than Stanford’s tutorial-focused approach, I have to admit I was enthralled by the deadlines: they kept me focused. It should be emphasized that Stanford’s courses like the more traditional OER archival courses can be pursued at a pace that suits your time and interest: there’s no imperative to follow the deadlines or earn kudos for accomplishments.How I used the course materials
Although I have been using databases professionally for many years, I had not read nor studied the subject in any depth previously. I decided to take this opportunity for a deep dive. Widom’s Databases course includes a simple enrollment process, tutorial-style videos (for download or in a browser with Flash support), automatically graded exercises, quizzes, and exams each with hard deadlines, a Course Materials section with many goodies, Optional Exercises, a FAQ, a Q&A forum, and a “Statement of Accomplishment” from the instructor if you completed a substantial portion of the coursework by the deadline (6,513 of the 91,000 students enrolled in the Fall 2011 Databases course earned one; here is mine).
First, I watched each video twice taking detailed handwritten notes on the second viewing (22 pages worth!). I then checked the Flash version of the videos which often included inline questions that were very useful (Stanford’s Flash video viewer is the best I’ve seen: it even supports speeding up the video by 1.2 or 1.5 times while automatically adjusting the pitch!).
Then I worked through the quizzes and exercises. One nice feature of both was that you could attempt them many times. Different variants were provided to many of the quiz questions to make it harder to apply a blind trial and error approach and you can continue to work on them after getting them all correct (which might be useful as a way to practice for the exams or to see if you remember anything of the course when you check back in 1 or 10 years). I found the quizzes and exams to be very challenging and not so rewarding. Of course some mastery is required and acquired from the quizzes and for other learning styles they may prove more valuable than they were for me: judge for yourself.
The course included many supplementary exercises to provide extra practice. I used them for Relational Algebra and they were very helpful. However due to time constraints, I was unable to use them further. Most of my time was spent working through the exercises. I did all the exercises in an xterm window running sqlite, psql, xmllint, saxonb-xquery, or saxonb-xslt and pasting the results into the query workbench. This allowed me to really experience the FOSS tools “in the wild” which gave me a strong sense of their ins and outs. For me the interactive exercises were fantastic: they really helped me learn the material by directly engaging my problem solving faculty. They were like a real project with deadlines! Although I occasionally got ruffled with some of the difficult ones, they were engaging and fun!
Although the course web site is very simple and well-designed, it was still possible to have difficulty finding some of the gems provided for the students. For example, it took me awhile to find the code used in the demos (which was extremely useful by the way): the Course Materials section of the site has all the goodies you need but you have to mouse over the icons to see treasures that appear hidden at first (remember to right click to download). Also look carefully at the prescripts or postscripts affixed to some sections: more treasures.
The Q&A forum was helpful for finding things that were not at first apparent. A couple of times I scoured the Internet or Wikipedia looking for other angles on the material to understand a point I was struggling with. All work for the class is “open book”, so I only prepared for the exams by simply reviewing my notes.Advice for students
I recommend taking the course now even though the deadlines have expired. Feel free to skip any part of the course that your interests, time constraints, and patience warrant. If the course is ever offered again, you will already know much of the material which should help you earn a “Statement of Accomplishment”. If not, you will better understand a broadly useful, important and interesting subject.
If you want to do a “lite” version of the course, I recommend skipping the quizzes and exams. In addition, many of the topics can be skipped if you are short on time or find them uninteresting. To her credit Jennifer Widom recommended as much in her screen side chats which provided a wonderful human dimension to the course. Although some of the material is cumulative, there are several parts of the course for which skipping is a real option. For example, the Relational Algebra (I thoroughly enjoyed doing those exercises!!!) and the Relational Design Theory topics are, I think, less important especially if you just want to acquire basic DBA skills. I deal with enough XML, that I found that part of the course extremely useful, but I can imagine someone who just needs SQL might skip those parts. This is a free course: you can be creative in how you use the materials so that you get what you want out of it!
I recommend doing the exercises associated with each topic (some did not have exercises). Some of them are quite challenging and some took me quite a bit of time. If necessary, skip some of the harder ones. If time is really pressing, just watch the videos that particularly interest you: remember this is a free resource: you can tailor your work on the course in whatever way suits your interests and time.
I did not buy nor borrow a textbook for the course (I was very impressed that Widom prepared reading assignments for four separate texts in the Course Materials sections of the site. Wow, that must have been a lot of work!). Having been through the course, I think a text is unnecessary for most students. You may find a few topics that are hard for you or for which the videos were insufficient to master the material. Since textbooks are more comprehensive and more detailed, they could help fill in the gaps. In particular diligent students may want a text. I prefer to learn iteratively, that is, I would prefer a shallow course today and another later that goes in more depth (I might even prefer to take two lite courses to build my mastery of a subject by degrees). But if you want a more complete experience now, then by all means get a textbook and dig in!Other OER Database Resources
In addition to the OER resources below, I found occasion to reference Widom’s course site for Stanford students in the allied CS145 Introduction to Databases and her colleague Jeff Ullman’s offering of CS145 from Autumn 2002. MIT OCW has 6.814/6.830 on Database Systems which looks a bit too advanced for an introductory course and MIT OCW has 1.264J/ESD.264J Database, Internet, and Systems Integration Technologies which I found useful to supplement Widom’s course (especially for Relational Design Theory). Finally, the Indian Institutes of Technology (IIT) has a complete video course (with 43 videos totaling 40 hours and 17 minutes) on Database Management Systems or watch its YouTube playlist (I did not look at these videos, but I’ve seen other IIT material and they are usually very informative and accurate).Conclusion
Stanford’s exciting new system for on-line courses is remarkable in its use of social tools to engage students. This is a boon to the OER movement! In today’s rapidly changing world, refreshing and expanding one’s skills is essential to apprehending the needs and opportunities that abound if you are curious enough!
I’m hooked! Although I still love and will continue to use archived courses, I will be checking to see if Stanford has any courses of interest regularly from now on! I’ve signed up for several of Stanford’s offerings (there are 16 of them!) for Winter term with the intention of “dropping” or doing a “shallow dive” (maybe just watch a few videos and do some exercises as interest permits). But I am eying the Model Thinking course for a possible deep dive. To see the full list of offerings go to Class Central: Summary of Stanford’s online course offerings and plan your learning for the Winter term which starts next Monday, January 23rd!
Stanford’s Fall 2011 edition of Introduction to Databases was a great course! Kudos to Jennifer Widom and everyone at Stanford who made this possible.
If you haven’t started or finished it yet, head over to db-class.org now and get to it! It is one of the best resources on the Internet for learning about databases. Moreover, it includes the special benefit of covering a broad range of important FOSS database tools.Other Reviews of Widom’s Databases Course
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