Data Link Layer INTRODUCTION: Now a day’s communication is vital for the entire world‚ nothing happens without communication. The cell radio communication and wireless computer networks of GSM (Global System Mobile)‚ CDMA (Code Division Multiple Access) type are worldwide communication systems. All these communication systems are based on the reference model OSI-RM (Open System Interconnection-Reference Model) Description of OSI-RM System: OSI-RM is an International Standard ISO that defines
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CHAPTER 3 DATABASES AND DATA WAREHOUSES Building Business Intelligence CONTACT INFORMATION: Stephen Haag is the primary author of this chapter. If you have any questions or comments‚ please direct them to him at shaag@du.edu. THIS CHAPTER/MODULE IN SHORT FORM… This chapter introduces your students to the vitally important role of information in an organization and the various technology tools (databases‚ DBMSs‚ data warehouses‚ and data-mining tools) that facilitate the management
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sample gives a good approximation to his future demand patterns. Let G be the random variable: profit on a future day. a) Calculate the Expected Value‚ E[ G ]‚ Variance‚ 2[ G ] and standard deviation‚ [ G ]‚ of his future daily profit. [Hint: You can calculate a profit corresponding to each number of
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Chapter 12 Data Envelopment Analysis Data Envelopment Analysis DEA is an increasingly popular management tool. This write-up is an introduction to Data Envelopment Analysis DEA for people unfamiliar with the technique. For a more in-depth discussion of DEA‚ the interested reader is referred to Seiford and Thrall 1990 or the seminal work by Charnes‚ Cooper‚ and Rhodes 1978 . DEA is commonly used to evaluate the e ciency of a number of producers. A typical statistical approach is characterized
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conceptual schema design. Designing of a Database is considered as a systematized process that moulds data into a structure which is similar to the underlying system of database management model. Systems of database management are categorized into three main types: hierarchical‚ relational‚ and network. Database design is a process to organize data into a form which matches the underlying data model of the database management system. There are three major types of database management systems: network
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Qualitative data analysis What Is Qualitative Analysis? Qualitative modes of data analysis provide ways of discerning‚ examining‚ comparing and contrasting‚ and interpreting meaningful patterns or themes. The varieties of approaches - including ethnography‚ narrative analysis‚ discourse analysis‚ and textual analysis - correspond to different types of data‚ disciplinary traditions‚ objectives‚ and philosophical orientations. What Is Qualitative Analysis? We have few agreed-on canons for qualitative
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Data Warehouse Testing By : Kartikey Brahmkshatriya (M.C.A) Index 1. Introduction 3 2. About Data Warehouse 3 2.1 Data Warehouse definition 3 3. Testing Process for Data warehouse: 3 3.1 Requirements Testing : 3 3.2 Unit Testing : 4 3.3 Integration Testing : 4 3.3.1 Scenarios to be covered in Integration Testing 5 3.3.2 Validating the Report data 5 3.4 User Acceptance Testing 5 4. Conclusion 5 Introduction This document details the testing
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Crime Data Comparison Crime Data Comparison Crime is being committed every second of each day around the world. Citizens of certain communities view crime as unwanted and causes of unnecessary stressors‚ although citizens from the lower class society view crime as a normal standard for everyday life. Certain crimes across the United States can be directly associated with gender‚ ethnicity. For instance‚ woman shoplift more than a man‚ and men conduct more violent offenses such as murder
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"What Kind Of World Do You Want To Live In?" If we are able to create a world of our own we would that world with everything we like and erasing everything that we dislike. But that world could change based on our ages. So like every normal people I have my own world in my mind since I was little. Since my dream is to become a scientist I want to be the creator of every single thing in my own world. I want to protect my own world like "Super Man" protects the earth. And I want to erase every disease
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the stock prices by using trends‚ patterns‚ moving averages observed from historical data. However‚ there have been a certain number of people criticizing the use of past data. Among these people‚ a French mathematician‚ Louis Bachelier raised a theory called Efficient Market Hypothesis more than a century ago. The theory states that stock prices follow a random walk‚ which discouraged the study of historical data. This is very controversial and has led to an ever lasting dispute about the reliability
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