Engineering, 06.05.2020 00:08 itscheesycheedar
Write the following as triggers. In each case, disallow or undo the modification if it does not satisfy the stated constraint. The database schema is from the "PC" example of Exercise 2.4.1: Product (maker, model, type) PC (model, speed, ram, hd, price) Laptop (model, speed, ram, hd, screen, price) Printer (model, color, type, price) a) When updating the price of a PC, check that there is no lower priced PC with the same speed. b) When inserting a new printer, check that the model number exists in Product.
Answers: 1
Engineering, 03.07.2019 14:10
When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point
Answers: 3
Engineering, 04.07.2019 18:10
What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.
Answers: 2
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:10
Fluids at rest possess no flow energy. a)- true b)- false
Answers: 3
Write the following as triggers. In each case, disallow or undo the modification if it does not sati...
Computers and Technology, 13.11.2019 02:31
Social Studies, 13.11.2019 02:31
Computers and Technology, 13.11.2019 02:31