INSTRUCTOR’S MANUAL TO ACCOMPANY Database System Concepts Fourth Edition Abraham Silberschatz Yale University Henry F. Korth Lehigh University S. Sudarshan Indian Institute of Technology‚ Bombay Copyright c 2001 A. Silberschatz‚ H. Korth‚ and S. Sudarshan Contents Preface 1 Chapter 1 Exercises Chapter 2 Exercises Chapter 3 Exercises Chapter 4 Exercises Chapter 5 Exercises Chapter 6 Exercises Introduction 4 Entity Relationship Model 9 Relational
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A buffer solution can maintains a narrow range of pH even when strong acid are added. In our experiment‚ we can see water is not a buffer‚ water can undergo very big changes when small amounts of strong acid or strong bases are added. When the strong acid‚ 100µl HCl was added into the dd water‚ the pH value changed from 7.38 to 5.83 which mean the dd water has turn into acid. The same phenomenon occurs while strong base‚ 100µl NaOH was added into the dd water. The pH value changed from 7.07 to 9
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PROPERTIES OF SOLUTIONS A solution is a mixture of materials‚ one of which is usually a fluid. A fluid is a material that flows‚ such as a liquid or a gas. The fluid of a solution is usually the solvent. The material other than the solvent is the solute. We say that we dissolve the solute into the solvent. Some solutions are so common to us that we give them a unique name. A solution of water and sugar is called syrup. A solution of sodium chloride (common table salt) in water is called brine
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India In a country with 1.18 billion people and counting it is hard to keep track of all the small things going on without a strong and organized government. Throughout India you can see various issues that may be keeping it from becoming an MDC. Major problems such as language differences‚ extreme poverty‚ health problems‚ migration issues; can all lead to one conclusion; Corruption. Power tends to corrupt‚ and absolute power corrupts absolutely. It’s not easy to define corruption. But in
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research papers in worldwide and India wide seminars like IPC‚ IPA‚ National seminars where 12 of my Research papers were published in Medical and Pharmacy Journals. I was also awarded a "Gold medal" for a Seminar conducted by Indian Pharmaceutical Congress which provided me a wonderful platform to meet the top heads of Pharmaceutical Industry in the country. I Started my career as an Asst. Manufacturing Chemist in Triomed Formulations India(Pvt) Ltd as soon as i was graduated
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Solutions for serious and popular crimes Almost everyone in American realizes that we have a crime problem. Being a criminal justice major‚ I will deal with crime my whole career. Cities have the highest crime rate‚ but small towns shouldn’t be overlooked. Crime is like an iceberg‚ with only the tip of it being what is reported. Some criminals that are reported just serve half of their sentence. Punishment for a serious crime in American needs to be swift and sure‚ especially for homicides and drug
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The idea for developing the Integrated Warehouse Solution is to solve the problem of the inventory‚ basically for the Warehouses. Before developing this system we thoroughly did the analysis regarding our competitors and after doing lot of research we find three major competitors. The scale on the basis of which we are competing with our competitors includes the price at which the service is being provided to the customers. Apart from price there are some other major factors that were also kept in
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1.John is twice as old as his friend Peter. Peter is 5 years older than Alice. In 5 years‚ John will be three times as old as Alice. How old is Peter now? 2. John’s father is 5 times older than John and John is twice as old as his sister Alice. In two years time‚ the sum of their ages will be 58. How old is John now? 3. Joan is 3 times as old as her sister. In 3 yeas ‚ shee will be two years more than twice the age her sister will be then. What are their ages? 4. Kevin is 4 years older than
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Solutions for Homelessness This great nation of awesome power and abundant resources is losing the battle against homelessness. The casualties can be seen on the street corners of every city in American holding an "I will work for food" sign. Homeless shelters and rescue missions are at full capacity. There is no room at the inn for the nation’s indigent. Anyone who has studied this issue understands that homelessness is a complex problem. Communities continue to struggle with this socio-economic
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2.2 Electrical Communication Study Guide by Hisrich 2.2.a How does communication happen within the body? Electrical Signals Nervous System Chemical Signals Endocrine System The nervous system is made up of neurons. Neurons communicate just like people do‚ but they send messages using action potentials (electricity passing through their axons). Each neuron picks up signals at its dendrites‚ passes the signals down the axon‚ into the axon terminals‚ and into the synapses. The synapse
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