Hello every, I've just received my contractor assignment yesterday. I am already confused by the data format in the .db file In the Data file format section, the instruction file states: 4 byte numeric, 2 byte numeric, and it says the header informatin use the formats of DataInputStream class. Is this means the 4 byte mumeric is written by writeInt() method and we should use readInt() method to read it? If this is the case, how about the 2 byte numeric? Or should I just read them use readByte() method? Please help me clarify this. Thank you!