mining and similar areas. The main reason of using OLAP to answer queries is speed. Relational databases store entities in discrete tables if they have been properly normalized. This structure is good for operational databases but for complex multi-table queries is comparatively slow. A better model for querying but worse for operational use is the dimensional database. OLAP take a snapshot of a relational database and restructures it into dimensional data. The queries can ten be run against
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University Philadelphia‚ PA yangyin7@gmail.com Abstract Existing techniques for disambiguating named entities in text mostly focus on Wikipedia as a target catalog of entities. Yet for many types of entities‚ such as restaurants and cult movies‚ relational databases exist that contain far more extensive information than Wikipedia. This paper introduces a new task‚ called Open-Database Named-Entity Disambiguation (Open-DB NED)‚ in which a system must be able to resolve named entities to symbols in
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Independence with its Types and Examples. 4. Definition : 1) Assertion 2) Authorization 5. Explain Object-Oriented Data Model 6. Explain Semi-Structured Data Model. 7. Explain Database System Architecture. 8. Explain Duties of Database Administrator. UNIT - 2 9. What are the steps involved in designing a database application? Explain with an example. 10. What is E-R Model? What is purpose of E-R Model? 11. Explain Entity and Entity Sets with Examples. 12. Explain Relation and Relationship Sets with Examples
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Relational Sales - Focusing on Your Customers’ Needs Facilitating the Customer’s Decision to Buy In an increasingly competitive business climate‚ customers are faced with a multitude of alternative products and vendors. A traditional approach based on "closing the sale" may be inefficient and even counter-productive. In today’s markets‚ customers need customized solutions to their needs. Rather than being sold to‚ customers want to buy. In relational sales the emphasis is on building and maintaining
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We discuss relational query optimizers in detail in Chapter 14. Section 13.1 lays the foundation for our discussion. It introduces query evaluation plans‚ which are composed of relational operators; considers alternative techniques for passing results between relational operators in a plan; and describes an iterator interface that makes it easy to combine code for individual relational operators into an executable plan. In Section 13.2‚ we describe the system catalogs for a relational DBMS. The catalogs
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the database server across a network via SQL (structured query language. For the large scale applications‚ “N” Tier client/server architecture must be adopted. The client/server model expands to include a middle (or business) tier‚ which is an application server that houses the
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contributing to their success. We looked at which business model components‚ such as value proposition‚ target customers‚ distribution channels‚ and revenue streams‚ are important. The type of e-business models each company used and the ones that are more successful were investigated. We discovered some similarities and differences; some differences were the use of revenue streams for generating multiple sources of revenue‚ the type of e-business models used and the role they play in executing the e-business
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Theoretical Models Colleen M. O ’Leary HCS/587 March 18‚ 2013 Theoretical Models The benefits of a motivated staff should prove an impetus to managers to use motivation as a driving force to obtain a high degree of functioning by employees. According to Musselwhite (2011) “managers who are effective at motivating their direct reports reap the reward of employees who can handle a variety of assignments‚ work more autonomously‚ report higher levels of job satisfaction‚ and contribute more
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Explain what is meant by a business model In general a business model describes in which way a company can generate revenue‚ and hereby makes profits from their respective operations. It is used by‚ for example‚ already established companies‚ which seek new forms of innovation strategies to put themselves in a stabile spot in the growing competitiveness among other companies. It is hereby also used by entrepreneurs‚ who are new to the business market‚ and want to be innovative and carve out their
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Management System). According to Wikipedia‚ OLAP begins by taking a snapshot of a relational database‚ and then restructuring it into a dimensional database. Queries are run against this snapshot. Data is pre-computed and placed on different levels. Because of this restructure‚ the queries can be run much faster than on a relational database‚ sometimes in " about 0.1% of the time to run the same query on relational data." In any business environment‚ speed and efficiency are always an advantage
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