Engineering, 16.04.2020 04:40 Orabah
In Chapter 4, you developed a domain model class diagram. Using your previous solution, update your domain model class diagram with any additional problem domain classes, new associations, or additional attributes that you have discovered as you worked toward your solutions in the previous chapters. Finalize this comprehensive domain model and then turn it in as part of your solution. Using this comprehensive domain model class diagram, develop a relational database schema. In the schema, identify the foreign keys that are required. Also, identify a key attribute for each table. You may need to add a key field if there isn’t an attribute that could logically serve as the key. Remember that a candidate key for an association class is the combination of the keys of the connected classes. However, it may make sense to define a shorter, more concise key field. 1) Verify that each table is in first, second, and third form. 2) Discuss any discrepancies you had to fix from your first solution. 3) Discuss any tables that aren’t in third normal form and why you are leaving them as non-normalized. (For example, in the United States, city and state are functionally dependent on zip code, but you might leave all here fields in the same table. Why? )
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Engineering, 04.07.2019 18:10, jadeochoa4466
The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
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Engineering, 04.07.2019 18:20, miguel454545
Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.
Answers: 1
Engineering, 04.07.2019 18:20, cdyshaylia55
Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg
Answers: 2
Engineering, 04.07.2019 19:10, pjgolden04
How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?
Answers: 2
In Chapter 4, you developed a domain model class diagram. Using your previous solution, update your...
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