Utilizing Database Performance Using Column Store Research Paper

Utilizing Database Performance Using Column Store - Research Paper Example This technique of data storage has its benefits but again several questions still exist on the same matter. For instance, how row based systems be able to be customized to achieve performances associated with column stores? This is the kind of question whose answers we seek to discuss in this document. 1. Introduction The paper seeks to show how database performance can be increases using database column storage techniques. The paper will be divided into sections which include a brief description about the database column storage, an explanation on how column store can utilize the performance of databases, how database performance will differ by using column store and not row storage. Additionally, areas where column storage count will also be discussed; these are areas of application of the technique will also be discussed. Finally, recommendations on the enhancements of column stores will come at the end of the paper. 2. Database Column Storage Column store database systems can be traced to the 1970’s; this was the first time when transposed files were being studied; Then followed the investigations into the vertical partitioning technique of clustering table attributes on a database. The mid 80’s witnessed the experience of the advantages of decomposed model of storage (DSM). This was the predecessor to column storage technique. It was considered better than the old row based system of storage. Nonetheless, row based database systems still went on to maintain dominance of the markets as a result of market needs, as well as non-favorable trends in technology to implement the column based systems of storage. This was despite the fact that the DSM technique was very suitable and had potential for better analytical queries. However, the 2000s had good tidings for research on column storage systems. Commercial systems of the same took off instantly. In this paper, we look at the technology and the application trends which have led to the renaissance of commercialization of the column stores. In comparison to the row-oriented stores of data, the column oriented, database systems were read optimized; this means that the when a query is sent, access is granted to the required fields only, and a reduction in disk input output processes and time is registered. student_Id Firstname Lastname Grade 1 James Smith A 2 Cathy Jones A- 3 Elizabeth Queen C Table 1: Sample Database Table In a computer, the database information has to be converted and bytes for storage in the hard drive or to be written onto the RAM. For row-based storages, the data in the database is serialized according to the values in each of the rows; then follows the data in the next row. The data is arranged as follows, in the row based model: 1, James, Smith, A; 2, Cathy, Jones, A-; 3, Elizabeth, Queen, C; On the other hand, the column based storage system would arrange the data in the following format for storage: 1, 2, 3; James, Cathy, Elizabeth; Smith, Jones, Queen ; A, A-, C; Research on column stores indicates that, with compression, row-stores perform less effectively than column oriented systems. More formally, column storage systems store their data tables in the form of columns of data unlike the row based systems which store data in the form of rows of data; as seen in most relational

Recovery Hydrogen sulphide from Oil Refinery an enviroeconomic study Essay

Recovery Hydrogen sulphide from Oil Refinery an enviroeconomic study - Essay Example Additionally, the iron sulfide can cause upsets in treating systems and plugging in disposal wells. Aside from its corrosive nature, H2S is also a very toxic and very flammable gas. At low levels, H2S has a "rotten egg" smell. At levels of 100 ppm, H2S will paralyze the olfactory system, making it appear odorless. At levels above 700 ppm, H2S can kill instantly. To add to the threat this creates, H2S is heavier than air, allowing it to creep along the surface where it becomes a potentially life threatening, explosive hazard. Therefore it is extremely important to extract this compound from refineries for safety of humans and expensive machinery. However, Hydrogen Sulphide also has some significant uses. The most important industrial use of hydrogen sulfide is as a source of about 25% of the world production of elemental sulphur. The manufacturing process is based on burning about 1/3 of hydrogen sulfide to sulphur dioxide, then letting the resulting SO2 react with H2S. Other uses are in metallurgy for the preparation of metallic sulfides. It also finds use in preparation of phosphors and oil additives, in separation of metals, removal of metallic impurities, and in organic chemical synthesis. Hydrogen sulfide is also used in nuclear engineering, in the Girdler Sulfide process of manufacturing heavy water. The primary source of H2S is the Desulfovibrio sulfide reducing bacteria (SRB). SRBs reduce naturally occurring sulfate found in oilfield waters to hydrogen sulfide, which in turn reacts with iron to form iron sulfide. They are especially efficient in low-oxygen environments, such as in swamps and standing waters. Some other anaerobic bacteria liberate hydrogen sulfide when they digest sulfur-containing amino acids. Hydrogen Sulphide can be created anywhere where sulphur comes in contact with organic material at high temperatures. Processes for Hydrogen Sulphide recovery The most obvious method to avoid creation of Hydrogen Sulphide is to eliminate the sulphate from water prior to its injection. This can be done by using a nanofiltration membrane which removes all particles greater than one one-thousands of a micron resulting in high quality injection water free of silica and bacterial materials thereby insuring continued injection rates reflective of initial reservoir conditions.This process is very cost effective because it reduces the cost related to sour gas and oil treatment or dedicated "sour safe" pipelines and allows use of less costly metallurgy for the operation due to reduced stress cracking and corrosion. It also reduces the potential for necessary addition equipment on a platform with limited space and weight capacities. Another method for removing Hydrogen Sulphide is by caustic washing. Caustic treating (sweetening) removes all the hydrogen sulphide and convert most of the mercaptans to disulphides. Chlorine is also used to control odor and for H2S control. Continuous chlorination is a widely used and effective method for oxidizing hydrogen sulfide, especially if the water pH is 6.0-8.0. Chlorine is usually administered as sodium hypochlorite, which reacts with sulfide, hydrogen sulfide, and bisulfates to form compounds that do not cause foul taste or odors. Other oxidizing agents besides chlorine can be added to the water to oxidize H2S. These include hydrogen peroxide, potassium

Assignment 2 - Differentiating age changes from pathological changes

2 - Differentiating age changes from pathological changes - Assignment Example It also causes profuse sweating, increased breathing and pulse rate (Nadel, 2008). A bluish colour may appear in the lips and nails due to the reduce oxygen in the blood. This causes confused and delirious mental state to the patient. Coughs- this because of reduced output of the respiratory system causing abnormal respiratory responses. This is because chest bones become thinner which causes a shape change of the ribcage. Thus the ribcage expands less during breathing. This can also be attributed to changes in the immune system thus the lungs recover less from exposure to harmful particles (Cook, Zumla, A & Manson, 2009). Chills- metabolism becomes slower as one ages therefore heat generation by the body is low thus muscles have to provide alternative means to generate heat. This reduction in metabolism is due to the thyroid becoming lumpy thus affecting the production of hormones that are responsible for metabolism. Shortness of breath and tiredness- as one grows older; muscles that support the diaphragm are weakened. This causes the airways to lose their ability of keeping the airways open. Causing them to close easily. This can be attributed to loss of shape and bagginess of the alveoli. All these changes in lung tissue causes air to get trapped in the lungs thus not enough oxygen reaches the capillaries. Removal of carbon IV oxide is reduced making breathing hard. Headache – headaches maybe more frequent as one ages because of a number of reasons. One is that due to reduction in blood pressure that can prevent enough blood reaching the brain thus causing dehydration of brain cells causing minor headaches and light headiness. Drop in blood pressure can occur also due to the reduction in aldosterone hormone which in turn can indirectly or directly cause headaches. Fatigue – can be caused by the various factors. One key factor is the reduction of central nervous system functionality. This can also be attributed to reduced metabolism and

Phoenix one supersonic airplane Essay Example | Topics and Well Written Essays - 1250 words

Phoenix one supersonic airplane - Essay Example It can be done by reducing the direct operation costs, extension of the operating range and at the same time conserve the existing investments in crew training and maintenance procedures. To the manufacturers, it would allow for its production a minimum capital cost. The design of the airplane is model B. Selecting this model would be beneficial to both the society and the company as it reduces air pollution hence conserving the environment. If the board approved commencement of the project, following would take place. There would be a reduction of harmful acoustic effect on the airport environment, increase in the operating range, reduction of the fuel consumption, and aerodynamic improvements (Concorde technical specs, 2014). Aerospatiale prepared a report through the chair and managing director Jacques Mitterrand to the Frenched secretary of state to transport Mr. Cavaille. The report was about a proposal investigation of an improved version of Concorde by the name of Concorde B. The report further explained on the quality of work done and the knowledge possessed by the Aerospatiale Company. The report also gave the go-ahead to an exploratory study that was already being done to upgrade the capability of current Concorde design. As an investment project, the Concorde B model will reduce the monopolistic market, which is only dominated by Anglo-French project. The project will also ensure the company participates in the second-generation supersonic aircraft (Concorde technical specs, 2014). The project approval will confirm an economic interest for the company, which led to the improvement of the Concorde. The project is also favorable to the manufacturer as it allows the company to perform these improvements at a minimum capital cost. The investment project will be environmental friendly as business operations are expected to be ethical. The model will reduce the harmful acoustic effect on the airport environment.

Individual Project Essay Example | Topics and Well Written Essays - 2750 words - 2

Individual Project - Essay Example The Five Cultural Dimensions Model is the brainchild of Geert Hofstede, a Dutch academic. This model shows five dimensions which define work-related values that are also related to national culture. These five dimensions (Hofstede, 2001) are discussed below. This dimension deals with the degree to which power is equally distributed in a society and the extent to which the said society accepts the distribution. A culture that is high power distance oriented has a preference for strong leadership styles, hierarchical bureaucracies. People in this kind of culture hold very high regard for authority. On the other hand, people in low power distance cultures favour autonomy and personal responsibility. This dimension addresses the extent to which people require clear structures and set boundaries. In high uncertainty cultures, individuals have a better mechanism for coping with risk and innovation. A low uncertainty culture puts a lot of emphasis on greater job security and standardisation. This is the measure to which people hold their own self-interest as opposed to the interests of a group. In a collective oriented culture, the group’s needs are deemed to be more important than personal needs and the government plays a big role in markets. On the other hand, an individualistic culture values and encourages free will. This dimension is concerned with the degree of the goal orientation of a society. A masculine society values status that is derived from position and wages while a feminine culture values quality of life and human relationships. This dimension looks at the extent to which a society values respect for tradition and long term commitments. Long term-oriented cultures greatly value thrift, long term planning and industriousness. Short-term oriented cultures are more concerned with living for the moment and

The pyramid Essay Example | Topics and Well Written Essays - 750 words

The pyramid - Essay Example raftsmen talent on exemplary basis having a perfect architectural structure and several theories exist with regard to its constructional methodology and purpose. The pyramid was built around 4500 years ago by the Egyptians for Pharaoh Khufu as his tomb. If looked at from an engineers perspective, the design, accuracy and crafting of its structure matches the modern day structures that exist in todays world. The placement of rocks that give it a triangular design are within tiny fractions of degree and so the largest structure not only reflects history but past society engineering methods2. The structure of the pyramid consists of approximately 2-3 million blocks of granite, which weigh two and a half tons. The total weight of the entire set of graphite rocks used would be approximately six million tons. The Great Pyramid is an epitome of a mixture of different branches of science that include geometry, the value of pi and astronomy. This makes it one of the highlighted wonders of the world. The slides are so aligned and precise that they give the entire structure a relationship with the moon, sun and the stars in the sky. The pyramid over th is period of time has seen disturbances geologically that have made an impact on its structural accuracy. If these are excluded, it is believed that the entire structure would have been more accurate in its integrity 3. There are several theories that revolve around the construction of the Great Pyramid. Science is still figuring out how huge heavy stones were taken to the top and placed with such precision to make the great structure. It is believed that the rocks were aligned in the structure with the help of a series of wooden staves in a parallel fashion that were placed at right angles and moved in the motion. More rocks were taken to the top with the help of placing them on wooden sledges4. The labor force used in building the Great Pyramid is also a mystery. One theory highlights that the slaves were made to work until

Delta Synthetics Essay Example | Topics and Well Written Essays - 1750 words

Delta Synthetics - Essay Example Both the three plant produce a capacity of 5.5 million kilogram's per year but when the annual closure and maintenance take place, the company's capacity of production is 5 million kilogram's per year. The company wants to introduce a new product and so it has to improve the capacity of its production. Within six years, it is expected that the production capacity will increase and so the forecast and planning has to be done. The forecasted result show that the result for the britelene demand is falling but it is not likely to go to zero but it is going to reach a residual demand level .From the year 1996 to 1998, it is only the britelene that was produced. There is a reduction in the demand of the product due to some resources which could have been used to promote the sales was diverted in the production of the new substance. In the year 1999, the company started producing Briton. The production of this product led to the decrease in the demand of brutlene while the Briton continued to increase in its demand as the years go by. In the year 2002, the demand of bretlene is 10 million kilograms while that of Briton is 29 million kilograms. The total sales of both the products remain the same from the year 2002 to 2002 whereby in 2000, 39 million kilograms were sold, in 2001; 38 million kilogram's were sold while in 2002 the total was 2002 million kilograms. The results are reflected in the table below. Year Brutlene in million kilogram's Difference in million kilograms between successive years Briton in million kilograms Difference in million kilograms between successive years Total of the products in million kilograms. 1999 17 3 30 2000 13 (4) 16 13 39 2001 11 (2) 27 9 38 2002 10 (1) 29 2 39 The total remains the same and so the likely trend of total sales is likely to remain the same or show a negligible difference. Since the sales of brutlene are reducing and it should have a reserve level of sales, the focus for the reduction in sales is likely to be at a level of one million kilograms per annum. .Due to this, the value of sales of brutelene for the next six years from 2002 is as follow. In 2003, the sales are likely to be 9 million kilogram's. In 2004,the likely sales is 8 million kilograms .In 2005,the likely sales is 7million kilogram's. In the year2006,the likely sales is 6 million kilograms. in the year 2007,the likely sales is 5 million kilograms while in 2008,the likely sales is going to be 4million kilogram's. For the Briton, the sales in the next six years are obtained by the difference in total sales which is constant for each year from the predicted sales of each year. In the year 2003, the likely sale of Briton is 30 million kilograms. In the year 2004, the likely sales are 31 million kilograms. In the year 2005, the sales are likely to be 32 million kilograms. In the year 2006, the likely sales is33 million kilogram's.. In the year 2007, the likely sales is 34 million kilograms .In the year 2008, the predicted sales is likely to be 35 million kilograms. To obtain the required capacity, several plans have to be considered. These are the financial plan, marketing plan, operations plan, risk management plan and the management plan. Eric Versuh, John Wiley and sons (1999). In the financial plan they should look for more capital which can be obtained from borrowing from banks, ploughing back of the profit obtained from the