Origin of the name Roxanne: From the Greek RoxanÄ, which is believed to be derived from the Persian Roschana (dawn of day).The name was borne by the Bactrian wife of Alexander the Great, which seems to substantiate the name's roots. From A World of Baby Names by Teresa Norman.Buy the book.rom the Greek RoxanÄ, which is believed to be derived from the Persian Roschana (dawn of day). The name was borne by the Bactrian wife of Alexander the Great, which seems to substantiate the name's roots.
Making the world better, one answer at a time. Yes, the primary key is a field that uniquely identifies each record. The ANSI SQL Standard defines the primary keys through the PK restraint. Yes, the primary key is a field that uniquely identifies each record. The ANSI SQL Standard defines the primary keys through the PK restraint.
Each unique key is composed from one or more data attributes of that data entity. The set of unique keys declared for a data entity is often referred to as the candidate keys for that data entity. From the set of candidate keys, a single unique key is selected and declared the primary key for that data entity.he value(s) of these attributes are required to be unique for each tuple (row) in a relation. The value, or combination of values, of unique key attributes for any tuple should not be repeated for any other tuple in that relation.