Captain Abstraction's Song

Sung to the tune of the Oscar Meyer Wiener jingle

My selector has a special name that's never C-A-R,
My selector has a special name that's never C-D-R,
Constructor CONS is not my friend,
To tell you why I'll spell again:
D-A-T-A A-B-S-T-R-A-C-T-I-O-N