dB= 18 dB 2. Convert: (a) 65 W into dB= 18.1 dB (b) 10 dB into watts= 10/10 = log x => 10W (c) – 5 dB into watts= 5 = 10 log x x=10 ^(-5/10) = 0.316W (d) –30 dBm into dBrn= 30 dBrun (e) 15 dBrn into dBm= 10 log (p/1mW) 15/10= log (p/1mW) 1.5 =log (p/mW) = -15dB 2. A three-stage amplifier is shown with power gains. Calculate total power gain in decibels, and as a number. Ap(tot)=(Ap1)(Ap2)(Ap3)=7500
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uses a database engine that organizes data in a database in a table format utilizing rows for each record. 2. What is a DBMS? Briefly describe the components of a DBMS. a. DBMS stands for Database Management System. A DBMS is a collection of tools, features, and interfaces that enables users to add, update, manage, access, and analyze the contents of a database. A DBMS is made up of a DML (data manipulation language), Schema and subschemas, Physical data repository, and an Interface to allow
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Chapter 1 1.1. Define the following terms: data, database, DBMS, database system, database catalog, program-data independence, user view, DBA, end user, canned transaction, deductive database system, persistent object, meta-data, and transaction-processing application. • Data – known facts that can be recorded and that have implicit meaning. • Database – a collection of related data with an implicit meaning. • DBMS – a collection of programs that enables users to create and maintain
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. How could a business use information technology to increase switching cost and lock in its customers and suppliers? Use business example to support your answers. Ans:- Switching cost: Investment in information system technology ,such as those mentioned in the Wal-Mart example ,can make customers or suppliers dependent on the continued use of innovative ,mutually beneficial interenterprise information systems , they become reluctant
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Research Paper Introduction Database-management system (DBMS) is a collection of interrelated data and a set of programs to access those data. The collection of data, usually referred to as the database, contains information relevant to an enterprise. The primary goal of a DBMS is to provide a way to store and retrieve database information that is both convenient and efficient. Database systems are designed to manage large bodies of information. Management of data involves both defining structures
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distribution transparent to the users. Distributed database system is to referred as a combination of the distributed databases and the distributed DBMS Current trends in multi-tier client/server networks make DDBS an appropriated solution to provide access to and control over localized databases. Oracle, as a leading Database Management System (DBMS) vendor employs the two-phase commit technique to maintain consistent state for the database. INTRODUCTION DISTRIBUTED DATABASE SYSTEM was first used
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How can Play On Toys ensure its information technology systems are ready for growth? Issue: Play On Toys has enjoyed 5 years of success in the European market, experiencing strong growth, particularly in the past year, increasing its staff from 16 to 60 employees. With 200 customers, Play On Toys fulfils 3000 orders annually, with a turnover of 5million Euro and 1.4 million in pre-tax profit. Having expanded its range from 2 to 20 products, Play On Toys now works with 30 suppliers to acquire
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Mohammed WajahathHussain SajjadHussain Syed Uma Devi Singam Types of Database Management Systems A database management system (DBMS) is system software for creating and managing databases. The DBMS provides users and programmers with a systematic way to create, retrieve, update and manage data. [pic] Advantages of DBMS: • Data abstraction and independence • Data security • A locking mechanism for concurrent access • An efficient handler to balance
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budget next year, there are many “cover-ups” and “deceptions” in the proposed budget as put together by the Department of Budget and Management (DBM). In his 2013 budget message, Aquino said that his government was not neglecting public schools and universities, or the country’s “iskolar ng bayan” or scholars. Aquino then went on to explain that the DBM increased the allocation for SUCs by almost 44 percent or P11.3 billion, to P37.1 billion ($880 million) from the current P25.8 billion ($619 million)
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LTE Initial Access [pic] Like all mobile communication systems, in LTE a terminal must perform certain steps before it can receive or transmit data. These steps can be categorized in cell search and cell selection, derivation of system information, and random access. The complete procedure is known as LTE Initial Access and is shown in the Figure below. After the initial access procedure, the terminal is able to receive and transmit its user data. [pic] Initial synchronization [pic]
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