Data filtering: before building any query user input should be validated and filtered, for programmers, it's important to define some properties for each user-input variables: data type, data pattern, and data length . a field that is a number between (x and y) must be exactly validated using exact rule, for a field that is a string (text): pattern is the case, for example, username must contain only some characters lets say [a-zA-Z0-9_-.] the length varies between (x and n) where x and n (integers, x <=n ). Rule: creating exact filters and validation rules are best practice for me.
Because mechanical injection systems have limited adjustments to develop the optimal amount of fuel into an engine that needs to operate under a variety of different conditions (such as when starting, the engine’s speed and load, atmospheric and engine temperatures, altitude, ignition timing, etc.) electronic fuel injection (EFI) systems were developed that relied on numerous sensors and controls. When working together, these electronic components can sense variations and the main system computes the appropriate amount of fuel needed to achieve better engine performance based on a stored "map" of optimal settings for given requirements.