Dataware House Architecture - 1947 Words

DATA WAREHOUSE ARCHITECTURE Albina Yusupova Data Warehouse Architecture The main difference between the database architecture in a standard, on-line transaction processing oriented system (usually ERP or CRM system) and a Data Warehouse is that the system’s relational model is usually de-normalized into dimension and fact tables which are typical to a data warehouse database design. The differences in the database architectures are caused by different purposes of their existence. In a typical OLTP system the database performance is crucial, as end-user interface responsiveness is one of the most important factors determining usefulness of the application. That kind of a database needs to†¦show more content†¦In view of this, it is far more reasonable to present the different layers of a data warehouse architecture rather than discussing the specifics of any one system. In general, all data warehouse systems have the following layers: ï  ¬Data Source Layer ï  ¬Data Extraction Layer ï  ¬Staging Area ï  ¬ETL Layer ï  ¬Data Storage Layer ï  ¬Data Logic Layer ï  ¬Data Presentation Layer ï  ¬Metadata Layer ï  ¬System Operations Layer ï  ¬ The picture below shows the relationships among the different components of the data warehouse architecture: Metadata Layer Data Source Layer Data Extraction Layer Staging Area ETL Layer Data Storage Layer Data Logic Layer Data Presentation Layer System Operations Layer Each component is discussed individually below: Data Source Layer This represents the different data sources that feed data into the data warehouse. The data source can be of any format - plain text file, relational database, other types of database, Excel file, etc., can all act as a data source. Many different types of data can be a data source:  · Operations - such as sales data, HR data, product data, inventory data, marketing data, systems data.  · Web server logs with user browsing data.  · Internal market research data.  · Third-party data, such as census data, demographics data, or survey data. All these data sources together form the Data Source Layer. Data Extraction Layer Data gets pulled from theShow MoreRelatedMobile Phones And Its Impact On Our Day Lives978 Words   |  4 Pagesjobs in Hadoop ecosystem. It is very difficult to develop the code and reuse it for different business cases. On the other hand, People are very much comfortable to query data using SQL like queries. A team of developers at Facebook developed a dataware house tool namely called as HIVE. Hive supports the queries like SQL type which is called as HiveQL. These queries are compiled as map reduce jobs and are executed using Hadoop. Through HiveQL we can plugin custom map reduce scripts into the queriesRead MoreUnderstanding Of Data Center Bridging1701 Words   |  7 Pagesavailability will definitely costs more, but it will be effective when we perform mistakes. Regular backups complement high availability by preventing data loss during high availability failure. High availability is usually maintained by creating architecture with data sources (DB), resources in two different data centers separated by a reasonable distance. In aws this is is called as avalibility zones (AZ). High availability DB’s are maintained by either mirroring technology or replication mechanismRead MoreBig Data Vs. Public Sector Organizations Essay2516 Words   |  11 Pagesperiod from 1990 till 2014 saw a tremendous growth in hard drives phenomena ranging from couple of hundreds of megabytes to 8 tera bytes and also the cost of hard drives relatively decreased. This is the main reason why we can say that concept of dataware house came in that is organization started considering the need of OLAP as compared to just the earlier relational databases, for analyzing the business and its customer needs and hence we can see huge amount of data getting generated these days as

Analysis Of Gray s Anatomy - 868 Words

â€Å"Media Analysis Paper† Relationships are about two people who want the same thing. In Gray’s Anatomy there are many different friendships, relationships and theories. With different kinds of friendships, sometimes you can’t tell what is real. Association is when you’re friends just because you work together. Sometimes people confuse love with lust. Ludus is when a relationship is just for fun, nothing more. Sometimes being in a relationship with people you love doesn’t always go the exact way you want. â€Å"Relationship Rules Theory† is help together by rules and by following them. Being equal in a relationship is huge matter. â€Å"Equal Theory† is when some relationships work and some don’t. It takes two dedicated people to succeed at friendships and relationships. In Grey’s Anatomy there are different types of friendships. You have friendships that are equal in giving and receiving. You also have some that are not equal and consist of having short friendships. While watching episode 17 I noticed a dichotomy between Edwards and Blake. Their friendship would be described as association. Which mean it’s normally a short friendship and usually you are only friends because you are co workers. An example I saw was Blake went behind Edwards back and applied for a position Edwards was already promised. Blake knew what she was taking from her and that why she hid what she had planed. This friendship described association, based on not truly being friends. They were only associates toShow MoreRelated The Picture of Dorian Gray by Oscar Wilde760 Words   |  3 Pagesis unavoidable when a person does not establish a sense of identity. The definition of influence in â€Å"The Picture of Dorian Gray† is, â€Å"there is no such thing a s a good influence...because to influence a person is to give him ones own soul†¦he becomes an echo of someone elses music, an actor of a part that has not been written for him† (Wilde 18). â€Å"In The Picture of Dorian Gray†, Dorian’s portrait alters as Dorian himself alters his personality which exemplifies more of an influential transformationRead MoreDebate Summary: The Causes of Depression Essay868 Words   |  4 Pagesdepression. However, this learner presented evidence along with personal experiences to support the biological perspective of the debate. The biological influences associated with depression include genes, chemical imbalance, and or damage to the anatomy of the brain. For example, genes are the personal blueprint of every individual, which maps out what a person is likely to inherit from generation to generation. These inherited gens predispose a person to inherit certain personality traits, physicalRead MoreThe Root Cause of Depression: Biological, Cognitive-Behavioral, or Both?1509 Words   |  7 Pagesinfluences such as the loss of a loved one or a job. Whereas, those who support the biological perspective believe depression results from the genes a person inherits, chemical imbalances that change the functions of the brain, as well as damage to the anatomy of the brain. In addition to these two perspectives, some believe that neither the one nor the other perspective alone causes depression, but that a combination of both influences the onset of the debilitating disorder. This paper will address theRead MoreThe Portrayal Of Gay And Gay891 Words   |  4 Pageslesbian and gay people. In order to prevent discriminating them from the other groups, more accurate representation of homosexuals should be provide on the mainstream media. This content analysis paper will focus on analyzing the portrayal of gay characters in TV shows. The subjects of this analysis are 10 characters from six recent TV shows I specifically picked form ABC, FOX, CBS and the CW TV. Each of these shows has at least one gay character that is important elements in the whole storylineRead MoreComputer Aided Diagnosis Systems For Infectious Diseases Essay1998 Words   |  8 PagesDr. Bagci has published numerous studies in informatics of radiology spanning from development of computer aided diagnosis systems for infectious diseases to general image analysis techniques in MRI, CT, PET, and histology images, and development of image enhancement and reconstruction methods both in clinical, pre-clinical, and technical fields [11-65]. His works appeared in top-tier journals such as Nature Communications, IEEE Transactions on Medical Imaging, Journal of Virology, Journal of PathologyRead MoreLanguage and Brain 1328 Words   |  6 Pagesdi scussing the following :First, the brain anatomy. Second, language and brain. 2.1 Brain Anatomy Human brain is located inside the head and protected by bones. It is the headquarters of the body because it over controls the mental and physical activities. It consists of the surface or external part and this is called cortex and the internal part space (that is sub-cortical areas) .The surface consists of a gray matter whereas, the internal space or sub-corticalRead MoreEssay on Breast Cancer4172 Words   |  17 PagesShriver, S. 2002)   Ã‚  Ã‚  Ã‚  Ã‚  Invasive cancer is the more serious form of breast cancer. Invasive cancer develops when some abnormal cells from the interior of the lobules or ducts rupture out into the breast tissue surrounding the lobules. Once these cells are free, they may travel into the lymphatic and vascular system where they have access to virtually all other areas of the body. These cells are especially fond of migrating to the liver, bones, and lungs. (Dimensions of Human Sexuality, Shriver, S. 2002) Read MoreNumerical Analysis Of Human Head Response2241 Words   |  9 Pagesthe numerical analysis of human head response in a car accident in the sagittal plane. This is achieved by making oneself aware of the dynamic loading that arises at the instant accident occurs and the response of the human head to such loading. The response is usually biomechanical, which can be studied in terms of head acceleration due to the impact caused by the collision of the vehicle and the intracranial pr essure caused by the accident. A 3D head model (comprises the skull, gray matter, CSF,Read MoreA Short Note On Mr Image Classification Using Adaboost Essay2265 Words   |  10 PagesMR Image Classification Using Adaboost For Brain Tumor Types Priyanka B. Zaware Electronics and Telecommunication Engineering P.E.S Modern COE, Pune University Pune, India priyanka30991@gmail.com Prof. Rupali S. Kamathe Electronics and Telecommunication Engineering P.E.S Modern COE, Pune University Pune, India rupalikamathe@gmail.com Abstract — Magnetic resonance imaging (MRI) is an crucial and most important technique used in the detection and classification of brain tumorRead MoreSpeech Of The School Of Performing Arts And Cinema At Virginia Tech1642 Words   |  7 Pagesnever forget the fights I had with my dear dad and the worried look on my mother s face when I told them I wanted to study acting and theatre in college. You have a great mind, Patty! I remember my dad saying, You need to use it for something more practical! Go into law or medicine! Make theatre an avocation . . . not a vocation! You see I was raised in a family of scientists -- we had a copy of Gray s Anatomy (the book, not the television series) and a hefty taxonomic reference guide by the

Pwc Open Question free essay sample

Please give a brief summary of your current recreational and leisure activities, including sports and holidays. I am a enegetic boy. I like sports, and I’m really a big sports fan, especially football and basketball, and I play them with my friends regularly, I think it is beneficial not only for my health, but also the relationship between the friends. Reading is my second favorite, magazines, novels, newspapers , whatever, I am curious about everything, so I usually spent a whole day in the library during the weekend to dig out the answer.And I usually watch a movie or American TV series, and share my feelings with my friends. 2. What clubs and societies are you a member of and in what capacity? I once a chairperson of the students’ union during my undergraduate years, and organized a lot of activities, such as the sports meeting, the debating contest, evening party and so on, during my graduate years, I am also a member of the drama society, I once have been a leading actress in the english drama â€Å"gone with the wind†. More than 50 news and other articles written by myself published in newspaper.I join the graduate communist youth league as the head of the department of the social practice. thinking some new activities and put it into practice is my job, fortunately, through communicating with the students,we know their needs,and I thought out the ideas and with others members, we have organized the contest of innovative classes, including preliminary and final, the contest of â€Å"who can convince the ceo’, a management problem solution contest, including prelinary,pk and final. Our activities have won the appreciation of the teachers and the students. 3.What factors have influenced your career choice? I think if I want to make contributions to my company, it needs a match between me and the job itself. For me, interest is very important, because that will give me the passion and inspire my innovation to complete my job, for the job, I will lay more emphasis on its development prospect, I want to grow with the development of the company. 4. Please describe your objective and what you have done to date to achieve it. I choose accounting as my career way. Because I like to research and help people solving their problems.This decision just made up in last semester. I haven’t prepared much for it but everything I have done I treated it seriously. As my major is management, I choose some lessons that related to investment to learn. Meanwhile I read some books about investment principle and business comments on newspapers. I choose auditing as my career way. Besides,auditing will provide me an opportunity to know many different companies and industries. I am an active and easy-going girl. I would like to cooperate with people from various backgrounds. This decision is made up in last year. As my major is Business Management, I choose some lessons such as accounting, auditing and finance to learn. Meanwhile I learned three CPA courses by my self and attended the examination in Sep, 2006. The CPA certification is one of my target in the coming year. Career object My name is John. I am going to talk about my career objectives. I want to be an excellent engineer in the area of communication when I first enter in the college, even back to high school I have already dreamed of being an engineer in the world’s leading companies or operators, such as Erricson, Nokia or China mobile.The main reason was that mobile phone was becoming popular those days and the mobile phone was a miracle to me. I wanted to know how such miracle happens. How did it work? Why we can talk to each other without any real connections. With such questions, I chose BUPT. I wanted to be an engineer in the communication area. I wanted to know the answers to such questions. Nowadays, I have leaned a lot in the college. I have already known how the mobile phone works. Of course, there still exist lots of details and new challenges that I do not know in this area. But basically, the mobile communication is no longer a miracle to me.Correspondingly, I have changed my opinion, changed my objective. I want to be a teacher, not the professors in universities, but an ordinary teacher in the elementary school. As it is known to all, certain remote and isolated area in china, people are still leading extraordinarily poor life. Lots of people with high education degree do not like to stay in these areas. They all want to come to the well-developed area, such as Beijing, Shaihai. Consequently, it is very short of teachers in such area, especially for those elementary schools. I think the children are innocent.They deserve the equal education opportunities. I want to bring hopes to these children. Another reason why I want to be such teachers is that I want to know the answers to the following questions: why they are so poor, due to the natural environment or the human subjective consciousness? Does education can bring any positive effect in changing such phenomenon? I want to find the answers by myself. About the objective in the coming 5-10 years, it is decided by the answers to the above questions that I am going to find. After I know the answers, I will try to find if I can do any help. If I can be any of use for those areas those children and I am qualified, I will continue to stay there and spend my lifetime to make my contributions. Else, I may come back to rejoin the communication industry, to pick up the goal that has been left. The objective I want to achieve when I first enter in this school, the engineer. I will try to reduce the cost of the communication service. Not to make more money. I want more and more people can enjoy the convenience brought by the rapid development of the technologies, especially for those poor.I also believe that people deserve the equal opportunity in enjoying the convenience brought by high techniques. Those career objectives may even can not form a clear develop path and it is also quite challenge. But, life itself is a miracle. No matter what you choose, no matter what you are going to pursue. Challenges are always there, isn’t? All we have to do is crossing the bridge when we come to it. Days are numbered, let’s fight for tomorrow. Thank you all. 5. Describe your greatest success or a situation where you exceeded your own expectation?To be honest, I failed in the college entrance examnation seven years ago, that is beyond everyone’s expectation, because I am very good at studing at school, that really shocks me a lot. But I remembered my teacher’s words â€Å" that is ok, although you failed in the starting line, but I hope you can win in the final line† so I set a lot of goals the moment I go to college and make them come true gradually, and the greatest success I have gained by now is I have ranked NO. 1 among the whole management department of the zhejiang univertsity in the graduate admisiion examnation.