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How Is a File Processing Approach Different from the Database Approach? In a file processing system, each department or area within an organization has its own set of data fi les. The records in one fi le may not relate to the records in any other fi le. Two major weaknesses of fi le processing systems are redundant data (duplicated data) and isolated data. With a database approach, many programs and users share the data in a database. The database approach reduces data redundancy, improves data integrity, shares data, permits easier access, and reduces development time. A database, however, can be more complex than a file processing system, requiring special training and more computer memory, storage, and processing power than file processing systems. Data in a database also can be more vulnerable than data in file processing systems.
A 1-inch elevator cable is 1000 feet long. The modulus of elasticity for the cable is 25,000,000 psi. Determine the total elongation of the cable due to a load of 20,000 pounds.
The curve is 750-ft long,and the minus grade of 3.6 percent intersects the plus grade of 6.2percent at station 240 + 80.00. Calculate the low point of thecurve if the intersection at station 240 + 80.00 is at elevation426.84.
The design wind speed is 15 mph at T=10C and p=0.9 bar. The efficiency of the turbine is n=20% meaning that 20% of the kinetic energy in the wind can be extracted. estimate the power in watts that can be produced by the turbine.
A C10x20 catilever beam is 12 feet long, supported on the right side. The beam supports two point loads: Load 1 is 2500 lbf and is located 2.5 feet from the wall. Load 2 is 1300 lbf and is located 12 feet from the wall.
Two triaxial compression tests were performed on two prepared samples of the same limestone. At a confining pressure of 2000 psi, the first sample failed at 9000 psi. Then at a confining pressure of 5000 psi, the other sample failed at 21000 psi.
The hydraulic braking system for the truck and trailer is set to produce equal braking forces for the two units. If the brakes are applied uniformly for 5 sec to bring the rig to a stop from a speed of 20 mph while moving down a 10 percent grade
Soil has been compacted in an embankment at a bulk density of 2.15 Mg/m^3 and a water content of 12%. The value of Gs is 2.65. Calculate the dry density, void ratio, degree of saturation and air content.
A concrete mix with a 3-inch slump, w/c ratio of 0.50 and a sand with a fine modulus of 2.4 contains 1700 lb/cubic yard of coarse aggregate. Compute the required weight of coarse aggregate per cubic yard.
HOCL is added to water in a tank as a disinfectant. After equilibrium is reached it is found that the pH of the water in the tank is 8.2 and the gas phase partial pressure is the head space of the tank is 0.2E-7 atm.
Again assuming d=14in, determine, or at least show exactly how to determine, the portion (length) of span of the subject beam which theoretically would require no shear reinforcement.
Infants drinking baby formula prepared with water containing nitrate concentrations exceeding 10.0 mg NO3- N/L (nitrate as nitrogen per litre)
The tensioning mechanism of a magnetic tape drive has a mass of 0.4 kg, and its center of gravity is at G. The tension T in the tape is maintained by presetting the tensile force in the spring at B to 14 N. Calculate T and the magnitude of the pin..
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