Abstract: Methods described herein generate executable program code based on sequence codes, such that the executable program code is executable by a computer processor. According to such a method, a command is received to generate executable program code. Via a code-building interface, user input is received indicating an operation to be performed by the executable program code, a data type for to the executable program code, and a condition for applying the executable program code. A sequence code is constructed to represent the user input, where the sequence code includes a sequence of character sets. From the sequence code, a first character set corresponding to the operation, a second character set corresponding to the data type, and a third character set corresponding to the condition are extracted. Mapping data is applied to the first character set, the second character set, and the third character set to generate the executable program code.