Not trying to be simplistic, but to me, if you are in control of your drinking instead of the alcohol being in control of your drinking, then more than likely you are NOT an alcoholic.
People can abuse alcohol though without ever becoming a full blown alcoholic.
Bottom line if it makes you feel crappy about yourself and begins to interfere with work and everything else in your life to the extent that it takes precedence over everything including the people you love, then you have a problem with alcohol and may actually be an alcoholic.
ps. My father was sober as a judge Mon-Fri, but come the weekend he was drunk as a cooter and about as useless as tits on a boar. That too is considered alcoholic ... He was a high functioning one, as we was able to run a multi-million dollar company, but he sure did sacrifice the family on the weekends by getting lost in his benders ... Also functional as a deacon and elder in our church, a freemason and big contributor to the masonic home for orphaned children. OMG! did he ever have a lot of people bamboozled ... !!!