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Can a primary key be applied on a nullable column? A primary key cannot be applied on a column with a null constraint (nullable). When…

How to setup a console in Debian Stretch? The file console-setupspecifies the encoding and the font to be used by setupcon(1)in order to setup the…

What is the dynamic element? Dynamic elements are database-driven or session-driven. When you edit an element in a database, it changes a number of areas…

What is voltage safety factor of SCR? The value of voltage safety factor lies is in the range of 2.0 to 2.5. What does the…

How do I get the current keyboard layout in Linux? 1 Answer. Now you can run the command ./xkblayout-state to get the current layout, e.g.…

What are the different types of feature selection? There are two main types of feature selection techniques: supervised and unsupervised, and supervised methods may be…

Is RPi GPIO installed by default? GPIO library is now installed in python, but it won’t be loaded by default. To use GPIO library in…

What is the relation between aliasing and over sampling? Oversampling is capable of improving resolution and signal-to-noise ratio, and can be helpful in avoiding aliasing…

Can QEMU run on ARM? QEMU can emulate both 32-bit and 64-bit Arm CPUs. Use the qemu-system-aarch64 executable to simulate a 64-bit Arm machine. How…

How long can you drive with a clogged catalytic converter? A Catalytic Converter Can Be Driven Indefinitely In the case that the catalytic converter is…