Comparison Of Rdbms Oodbms And Ordbms Information Technology Essay

Comparison Of Rdbms Oodbms And Ordbms Information Technology Essay The presentation of the similarities and differences between relational modeling of data and the object oriented modeling of data is of great importance both for data base designers and for users. By being well acquainted with the relational model and by noting the similarities and differences between the two approaches to data modeling, designers will be able to turn into account and to make use of the already acquired experience as an important basis for understanding and learning the methodology of designing object oriented databases. At the time if designers know the similarities and differences between these two approaches they have the possibility to convert a relational model into an object oriented model and inversely Informatica Economica Journal. 01/01/2007; http://c.researchgate.net/images/symbols/icon_thumb_up_grey.png?e59f9 I like this! http://c.researchgate.net/images/symbols/icon_thumb_up.png?e59f9 You like this publication http://www.researchgate.net/publication/26589213_Comparison_of_RDBMS_OODBMS_and_ORDBMS /**************************** What is the difference between odbms rdbms and ordbms? In: Database Programming, JAVA Programming [Edit categories] Data Warehousing Software Industry leading data warehousing Gather maintain consistent data www.sas.com/uk Ads by Google http://en.site1.answers.com/templates/icons/rc_gray1.gif?v=68832http://en.site1.answers.com/templates/icons/rc_gray1b.gif?v=68832 [Improve] http://en.site1.answers.com/templates/icons/abar_a.gif?v=68832 Answer The differences between the three approaches Table 1: A Comparison of Database Management Systems Criteria RDBMS ODBMS ORDBMS Defining standard SQL2 ODMG-2.0 SQL3 (in process) Support for object-oriented features Does not support; It is difficult to map program object to the database Supports extensively Limited support; mostly to new data types Usage Easy to use OK for programmers; some SQL access for end users Easy to use except for some extensions Support for complex relationships Does not support abstract datatypes Supports a wide variety of datatypes and data with complex inter-relationships Supports Abstract datatypes and complex relationships Performance Very good performance Relatively less performance Expected to perform very well Product maturity Relatively old and so very mature This concept is few years old and so relatively mature Still in development stage so immature. The use of SQL Extensive supports SQL OQL is similar to SQL, but with additional features like Complex objects and object-oriented features. SQL3 is being developed with OO features incorporated in it Advantages Its dependence on SQL, relatively simple query optimization hence good performance It can handle all types of complex applications, reusability of code, less coding Ability to query complex applications and ability to handle large and complex applications Disadvantages Inability to handle complex applications Low performance due to complex query optimization, inability to support large-scale systems Low performance in web applications Support from vendors It is considered to be highly successful so the market size is very large but many vendors are moving towards ORDBMS Presently lacking vendor support due to vast size of RDBMS market All major RDBMS vendors are after this so has very good future http://wiki.answers.com/Q/What_is_the_difference_between_odbms_rdbms_and_ordbms /********************************** OODBMS (Object Oriented Database Management System) Basics http://a323.yahoofs.com/coreid/4ae33e2bid18zul6sp1/zfIn.0szaa93rhgGjKCz5w/103/tn32.jpg?ciAQ2PNBJuqYP1Eh user by Bridewin, on Sun Nov 1, 2009 7:22am PST 2 Comments Post a Comment Read More from This Author  » Report Abuse http://a323.yahoofs.com/phugc/CrYlacFZl0FQ/photos/3e34afb6e0dfef3b7ff88aa6f8a2a63f/ori_667cb5ad1ce04b.jpg?ug_____DU3GDkZ3x OODBMS System An object database (also object-oriented database) is a database model in which information is represented in the form of objects as used in object-oriented programming. Object databases are a niche field within the broader DBMS market dominated by relational database management systems (RDBMS). Object databases have been considered since the early 1980s and 1990s but they have made little impact on mainstream commercial data processing, though there is some usage in specialized areas. When database capabilities are combined with object-oriented (OO) programming language capabilities, the result is an object database management system (ODBMS). Todays trend in programming languages is to utilize objects, thereby making OODBMS ideal for OO programmers because they can develop the product, store them as objects, and can replicate or modify existing objects to make new objects within the OODBMS. Information today includes not only data but video, audio, graphs, and photos which are considered complex data types. Relational DBMS arent natively capable of supporting these complex data types. By being integrated with the programming language, the programmer can maintain consistency within one environment because both the OODBMS and the programming language will use the same model of representation. Relational DBMS projects using complex data types would have to be divided into two separate tasks: the database model and the application. As the usage of web-based technology increases with the implementation of Intranets and extranets, companies have a vested interest in OODBMS to display their complex data. Using a DBMS that has been specifically designed to store data as objects gives an advantage to those companies that are geared towards multimedia presentation or organizations that utilize computer-aided design (CAD). Some object-oriented databases are designed to work well with object-oriented programming languages such as Python, Perl, Java, C#, Visual Basic .NET, C++, Objective-C and Smalltalk; others have their own programming languages. ODBMSs use exactly the same model as object-oriented programming languages. Advantages: The main benefit of creating a database with objects as data is speed. OODBMS are faster than relational DBMS because data isnt stored in relational rows and columns but as objects. Objects have a many to many relationship and are accessed by the use of pointers. Pointers are linked to objects to establish relationships. Another benefit of OODBMS is that it can be programmed with small procedural differences without affecting the entire system. This is most helpful for those organizations that have data relationships that arent entirely clear or need to change these relations to satisfy the new business requirements. This ability to change relationships leads to another benefit which is that relational DBMS cant handle complex data models while OODBMS can. Disadvantages: Slower and more difficult to formulate than relational. Lack of interoperability with a great number of tools/features that are taken for granted in the SQL world, including but not limited to industry standard connectivity, reporting tools, OLAP tools, and backup and recovery standards. Lack a formal mathematical foundation, unlike the relational model, and this in turn leads to weaknesses in their query support. Applications: Object databases based on persistent programming acquired a niche in application areas such as engineering and spatial databases, telecommunications, and scientific areas such as high energy physics and molecular biology. They have made little impact on mainstream commercial data processing, though there is some usage in specialized areas of financial services.[6][7] It is also worth noting that object databases held the record for the Worlds largest database (being the first to hold over 1000 terabytes at Stanford Linear Accelerator Center)[8] and the highest ingest rate ever recorded for a commercial database at over one Terabyte per hour. Another group of object databases focuses on embedded use in devices, packaged software, and real-time systems. http://shine.yahoo.com/channel/none/oodbms-object-oriented-database-management-system-basics-533483/ /************************************** Observations from a Tech Architect: Enterprise Implementation Issues Solutions by Craig Borysowich  (Chief Technology Tactician) Enterprise Technology Architect Craig Borysowich shares the challenges and achievements of enterprise solution design and more Enterprise Technology Architect Craig Borysowich shares the challenges and achievements of enterprise solution design and implementation. ..less Blog Main  /   Archive  /   Invite Peers   RSSRSS for Posts  /   RSS for Comments Previous Entry / Next Entry Some Pros Cons of Relational Databases Craig Borysowich  (Chief Technology Tactician)  posted  5/1/2008 | Comments  (0) http://images.ittoolbox.com/vt/icons/thumbsup.pngLike (0) Please Sign In or Register to like this blog. Working Share Share The relational model for databases provides the basic DBMS characteristics. In addition, an RDBMS also conforms to Codds model. Relational Database Characteristics Dr. Codd established 12 rules to which a DBMS must conform to be considered relational. DBMSs vary in the way in which they comply with these rules, however, commercial relational databases generally conform to these rules. Strengths of RDBMS Flexible and well-established. Sound theoretical foundation and use over many years has resulted in stable, standardized products available. Standard data access language through SQL. Costs and risks associated with large development efforts and with large databases are well understood. The fundamental structure, i.e., a table, is easily understood and the design and normalization process is well defined. Weaknesses of RDBMS Performance problems associated with re-assembling simple data structures into their more complicated real-world representations. Lack of support for complex base types, e.g., drawings. SQL is limited when accessing complex data. Knowledge of the database structure is required to create ad hoc queries. Locking mechanisms defined by RDBMSs do not allow design transactions to be supported, e.g., the check in and check out type of feature that would allow an engineer to modify a drawing over the course of several working days. http://it.toolbox.com/blogs/enterprise-solutions/some-pros-cons-of-relational-databases-24144 /******************************* The Advantages of a Relational Database Management System ds_0ecbc811-e864-4fed-a7c6-5a46ff28cd3fContributor By Deborah Lee Soltesz, eHow Contributing Writer Article Rating: (0 Ratings)   Email   Facebook   Twitter   StumbleUpon Add to Favorites   Print   Share I want to do this! Whats This? RDBMSs provide user access control and data integrity features. data security image by dinostock from Fotolia.com   RDBMSs provide user access control and data integrity features. A Relational Database Management System (RDBMS) is a software system that provides access to a relational database. The software system is a collection of software applications that can be used to create, maintain, manage and use the database. A relational database is a database structured on the relational model. Data are stored and presented in a tabular format, organized in rows and columns with one record per row. Data Structure The table format is simple and easy for database users to understand and use. RDBMSs provide data access using a natural structure and organization of the data. Database queries can search any column for matching entries. Multi-User Access RDBMSs allow multiple database users to access a database simultaneously. Built-in locking and transactions management functionality allow users to access data as it is being changed, prevents collisions between two users updating the data, and keeps users from accessing partially updated records. Privileges Authorization and privilege control features in an RDBMS allow the database administrator to restrict access to authorized users, and grant privileges to individual users based on the types of database tasks they need to perform. Authorization can be defined based on the remote client IP address in combination with user authorization, restricting access to specific external computer systems. Network Access RDBMSs provide access to the database through a server daemon, a specialized software program that listens for requests on a network, and allows database clients to connect to and use the database. Users do not need to be able to log in to the physical computer system to use the database, providing convenience for the users and a layer of security for the database. Network access allows developers to build desktop tools and Web applications to interact with databases. Speed The relational database model is not the fastest data structure. RDBMS advantages, such as simplicity, make the slower speed a fair trade-off. Optimizations built into an RDBMS, and the design of the databases, enhance performance, allowing RDBMSs to perform more than fast enough for most applications and data sets. Improvements in technology, increasing processor speeds and decreasing memory and storage costs allow systems administrators to build incredibly fast systems that can overcome any database performance shortcomings. Maintenance RDBMSs feature maintenance utilities that provide database administrators with tools to easily maintain, test, repair and back up the databases housed in the system. Many of the functions can be automated using built-in automation in the RDBMS, or automation tools available on the operating system. Language RDBMSs support a generic language called Structured Query Language (SQL). The SQL syntax is simple, and the language uses standard English language keywords and phrasing, making it fairly intuitive and easy to learn. Many RDBMSs add non-SQL, database-specific keywords, functions and features to the SQL language.

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Marx and Weber within Religion

Marx and Durkheim jointly cover the nucleus of the sociological thought on various issues. They encompass the major issues within the sociological tradition. Religion remained their favorite sociological subject and their have speculated over the issue in the modern sociological context. Marxian reflection on the sociology of religion is very limited whereas Durkheim has contributed largely on the philosophical and sociological issues pertaining to religion.   Marx is considered as an avant-garde sociologist on the concept of religion. Being influenced by Hegel's philosophy, Marx considers religion is a manifestation of â€Å"material realities and economic injustice†. Therefore, he labels problems in religion are eventually ultimate social problems. Most of the Marxian thought on the sociological aspects of religion is reflected in the quite a few opening paragraphs of his â€Å"Contribution to the Critique of Hegel’s Philosophy of Right: Introduction.† These are the same passages that include his widely quoted pronouncement on religion, that â€Å"it is the opium of the people.† Nevertheless, this statement by Marx can not be taken as demonstration of Marxian religious view. It is often misquoted devoid of its context. Marx’s starts his essay â€Å"Contribution to a Critique of Hegel's Philosophy of Right† with such words; â€Å"For Germany the criticism of religion is in the main complete, and criticism of religion is the premise of all criticism.† (Marx 1964B: 43) This raises the concerns why Marx has pronounced religious criticism as the essential element of all criticisms. The basic factor that compelled Marx to declare religious criticism as the basic form was the magnitude of significance that religion holds in the lives of humans. Now the question arises why Marx has declared the criticism of religion as he basic of all criticisms. John Macmurrary considers that it was the acknowledgement of historical judgment on the part of Marx. It was an illustration of his understanding on the social function of religion. He says in this regard; By criticism, in this phrase, we must be careful to understand what Marx understood by it, not the blank denial of religion, but the historical understanding of its necessity and function in society, which leads to its dialectical negation when its function is completed. Marx meant that the understanding of religion was the key to the understanding of social history. (Macmurrary 1935: 219) Mckown reinforces the same understanding like Mcmurray that Marx deems religion as a useful social tool and this thinking developed as profound analysis of social history pertaining to religion. But Mckown further emphasizes that this statement has too much generalization. (Mckown, 1975. p.46) Marx further asserts that religion is the production of social evolution and its serves society and state in several ways.   He does not eulogize religion but consider it of vital importance for layman as it enriches their lives with sense of worth. He says in this regards; Religion is, indeed, the self-consciousness and self-esteem of man who has either not yet won through to himself, or has already lost himself again. But man is no abstract being squatting outside the world. Man is the world of man—state, society. This state and this society produce religion, which is an inverted consciousness of the world, because they are an inverted world. Religion is the general theory of this world, its encyclopedic compendium, its logic in popular form, its spiritual point d'honneur, its enthusiasm, its moral sanction, its solemn complement, and its universal basis of consolation and justification. It is the fantastic realization of the human essence since the human essence has not acquired any true reality. The struggle against religion is, therefore, indirectly the struggle against that world whose spiritual aroma is religion. (Marx, 1964) Appraisal of religion is primary as religion creates the inverted delusions that the religion world i.e life hereafter, deities etc. is factual and that the material world is a shadow of that real life. So in his criticism of â€Å"religion†, he hit any religion that capsizes the physical world from being the primary reality. As an acquittal from his explicit attack on, Marx lessens his negative perception by evaluating the foundational purpose of religion in this way; â€Å"Religious suffering is at the same time an expression of real suffering and a protest against real suffering. Religion is the sigh of the oppressed creature, the sentiment of a heartless world, and the soul of soulless conditions. It is the opium of the people.† Marx’s religious viewpoint is not sympathetic toward religion and he does not consider it an extra-human phenomenon. But he is of the view hat religion is a product of society in order to provide solace to the distressed people. It was the mechanization of the poor to create an illusory world for themselves to create an escape from harsh realities of life. So he thinks that abolition of religion is necessary to eradicate the illusory world and create an environment for their real happiness. He says that religion is not a malady in itself but it is the indication and the remedy (simultaneously) of that malady i.e. religion is an expression and solution to a more fundamental happiness. So Marxian assertions about religion are not negative as they are often understood and interpreted. It manifests that Marx has a â€Å"partial validation of religion† until a suitable economic system does not remove the causes that created it. Marxian idea of religion derives its strength from his idea of â€Å"alienation†. He think hat it was â€Å"alienation† [1] that dehumanize the individuals and religious opium comes as a minimum resistance by the exploited people that provides illusory hope against the real exploitation. Another Marxian critic, Norman Birnbaum (1969), interpret this phenomenon in his way, to Marx, â€Å"religion is a spiritual response to a condition of alienation.† (p.126) Illustrating the ultimate and real purpose of religion (contrary to the view of the commom folk), he further exaplin Marxian view; â€Å"Religion was conceived to be a powerful conservative force that served to perpetuate the domination of one social class at the expense of others.† (Ibid 127).† So this a cause and effect phenomenon as this illusory hope of common and exploited folk further distoirts the socio-economic condition and in this way self-alienation of individual oincreases with more reliance on religion. Raines[2] sums up the Marxian sociology of religion in this way; â€Å"Like the Hebrew prophets of old, Marx knew that to speak of social justice we must become socially self-critical, and that means becoming critical of the ruling powers—whether they be kings or priests or investment bankers†¦. For Marx, all ideas are relative to the social location and interests of their production. And like the prophets before him, the most revealing perspective is not from the top down or the center outward, but the†¦point of view of the exploited and marginalized. Suffering can see through and unveil official explanations; it can cry out and protest against the arrogance of power.† (Raines) To Durkheim, religion was a social phenomenon that originates directly from the social needs of a society but he considers it an essential regulating force that shapes and determines the consciousness of a society. But its most important purpose is social cohesion. A close analysis of history by Durkheim[3] reflected that religion is a valid and vital force that binds the individuals and societies together.   Describing Durkheim motives o study religion on a broader level, Lewis Coser write in his monumental work â€Å"Maters of Sociological Thought†; Durkheim's earlier concern with social regulation was in the main focused on the more external forces of control, more particularly legal regulations that can be studied, so he argued, in the law books and without regard to individuals. Later he was led to consider forces of control that were internalized in individual consciousness. Being convinced that â€Å"society has to be present within the individual,† Durkheim, following the logic of his own theory, was led to the study of religion, one of the forces that created within individuals a sense of moral obligation to adhere to society's demands. (Coser, 1977. p. 136) Durkheim main concern was trace down the social origin of religion. the sociological interpretaion of religion. Fot this purpose, he tried to comprehend the basic forms of social religions. He   illustrated that Australian Toteism is the most rudimentary form of a religion. He considers that it was the basic social necessity of the social entity that compelled that group to devise a religious activity. Further explaining the social origin of religion, Durkhein says that religion is an epitome of social cohesion. To Durkheim, society was not a mere collection of individual but is has other internal and external dimensions. Internally, it is the substantial device that moulds our beliefs and attitudes while on the external horizon, it exerts and maintains pressures from the society to facilitate conformity to the above-mentioned collective beliefs and attitudes. For these two purposes, it devised the religious activity. He thought that the absolute purpose of religion is to enable people to show a willingness put their invidual interests and personal propensities and to put interests of society ahead of their own. So it capaciates the people to get ready for a cohesive social life. Ultimately, if individuals want to be happy, so they must regulate their individual needs and aspirations and their propensities must be confined into limits. This regulatory role must thus be executed by an external agency superior to the individual i.e. by society. Both these feature of social facts explains clearly that society is an independent entity that works for the collective benefits and dies not surrender to individual proclivities and requirements. Religion acts as social tool for this regulatory role of society. Religion internalizes that regulatory process and individuals act on that as an obligation. Durkheim consider religion as â€Å"society divinised† because religion only acts in the social domain. Durkheim observes god of divine manifestations of it as society itself. He takes god in the functional perspective and attributes functional traits to god and further links these characteristics to social phenomenon. For example, he says that â€Å"god is first of all a being that man conceives of as superior to himself in some respects and one on whom he believes he depends. †¦ Society also fosters in us the sense of perpetual dependence. †¦ Society requires us to make ourselves its servants, forgetful of our own interests†. (Elementary Forms for Religious Life, p. 208-209). Durkheim deems religion as â€Å"a unified system of beliefs and practices relative to sacred things, that is to say, things set apart and forbidden—beliefs and practices which unite into one single moral community called a Church, all those who adhere to them† (Elementary Forms for Religious Life, p. 47). He makes an important distinction in religious domain that is based on the separation of human experiences i.e. profane and the Sacred. Profane is the dominion of mundane life experiences i.e. routine work, daily life activities etc. This sphere has an ultimate utilitarian approach. The sacred realm constitutes of no-mundane experiences that includes he recognition of a non-empirical authority and non-utilitarian activities.   He says in this regard; A society whose members are united by the fact that they think in the same way in regard to the sacred world and its relations with the profane world, and by the fact that they translate these common ideas to common practices, is what is called a Church. In all history, we do not find a single religion without a Church. (Elementary Forms for Religious Life, p. 44) So a superior fusion of profane and sacred life makes the social cohesion that is necessary to put the civilization on the path of progress and prosperity. He describes the social association as an incarnation of relation between individuals and divinity. Coser says in this regard; â€Å"Religion is eminently social: it occurs in a social context, and, more importantly, when men celebrate sacred things, they unwittingly celebrate the power of their society. This power so transcends their own existence that they have to give it sacred significance in order to visualize it. (Coser, 1977. p. 136) Durkheim does not support Comte’s assertion that humans must endeavor to create a new â€Å"humanitarian cult† based on the rational principles. Durkheim like Marx does not suggest an abrupt ending to religion but reinforces the Marxian that it should work until an appropriate alternative does not replace this vital sociological tool. He says in this regard, â€Å"We must discover the rational substitutes for these religious notions that for a long time have served as the vehicle for the most essential moral ideas.† (Moral Education, 1961. p.9) Coser sums up the religions ultimate function as described by Durkhein, in this way; Finally, religion has a euphoric function in that it serves to counteract feelings of frustration and loss of faith and certitude by reestablishing the believers' sense of well-being, their sense of the essential rightness of the moral world of which they are a part. By countering the sense of loss, which, as in the case of death, may be experienced on both the individual and the collective level, religion helps to reestablish the balance of private and public confidence. (Coser, 1976. p.139) So Both Marx and Durkheim consider religion important social tools that give purpose and meaning to the human life.[4] Both consider the values of world religions i.e. intrinsic value and dignity of human perspective an important element but Marx views it as a toll of the oppressor to perpetuate its practices and to provide a fictitious idealism of human dignity to the common folk.   However both consider institution of religion as an imperative social necessity hitherto. References Bellah, Robert. â€Å"Durkheim and History.† American Sociological Review 24 (1959): 447- 61. Chiodi, P. Sartre and Marxism. Harvester Press Ltd. 1976. Coser, Lewis A. Masters of Sociological Thought: Ideas in Historical and Social Context, 2nd Ed., Fort Worth: Harcourt Brace Jovanovich, Inc. 1977. Emile Durkheim, Moral Education. New York; The Free Press.1961. Emile Durkheim, The Elementary Forms of Religious Life. New York; The Free Press, 1954. Macmurrary, John. The Early Development of Marx’s thought in Christianity and The Social Revolution. Ed. John Lewis;  Karl Polanyi;  Donald K Kitchin. London, Gollancz, 1935. Mckown, Delos Banning. The classical Marxist critiques of religion: Marx, Engels, Lenin, Kautsky. The Hague : Martinus Nijhoff, 1975. Marx. Karl. Introduction to a Critique of Hegel’s Philosophy of Right. 1844 Pickering, W. S. F. Durkheim's Sociology of Religion: Themes and Theories. London: Routledge & K. Paul. 1984. Raines, John. Marx on Religion. Philadelphia : Temple University Press, 2002. [1] Chiodi, the famous Marxian critic, Has defined Marx concept of alienation in these words; â€Å" It is the negative process by which a subject makes himself other than himself by virtue of a constraint which is capable of being removed on the initiative of the subject himself. â€Å" (Chiodi, 1976. p.80) [2] John Raines is Professor of Religion at Temple University. [3] Most of the Durkheim’s critics regards his findings as theoretical and ahistorical contemplations but Bellah is of the view that â€Å"Almost all of [Durkheim's] own researches draw heavily from historical and ethnological sources and are in fact organized in an historical framework† (p.  448). [4] Durkheim considers it the ultimate function whereas Marx labels it as inverted and pretended reality.

Application For Xpertrule And Ethical Issues - 1155 Words

Work Related Application for XpertRule and Ethical Issues The range of applications for XpertRule system to manufacturing, marketing, and sales is so wide. The system is wide ranging as helping a banker in making financial decisions to helping university advisors and university students to plan and schedule appointments. For example, in a financial service industry, XpertRule system can be used by bankers as an advisory system to help make decisions on whether to make a loan available to individuals or businesses. Globalization and modern technology have created competition in the financial industry and these competitions come with risks. Therefore, risk management in the financial industry is important. So persuading superiors in a financial industry such as in a bank, would not be so difficult because risk management is needed in credit, operations, and market. Risk management in banks does not only involve planning and backup but also technical assistance that helps bank managers take quick action and manage all risks (Mali Kulkarni, n. d). This would help increase quality, reduce error, decrease manpower, security system in banks, increase speed for complex tasking, increase customer service, and improve decisions (Mali Kulkarni, n.d). Although this system has some persuasive advantages, it could also be opposed because it might be deskilling decision markers. The use of this system could result in the unwarranted reliance on the system in decision-making and the