" What does it actually produce?\n",
"\n",
"1. Some database designers prefer to use\n",
" What does it actually produce?\n",
"\n",
"1. Some database designers prefer to use\n",
" to mark missing data rather than `null`.\n",
" For example,\n",
" they will use the date \"0000-00-00\" to mark a missing date,\n",
" to mark missing data rather than `null`.\n",
" For example,\n",
" they will use the date \"0000-00-00\" to mark a missing date,\n",