The Advent wreath is a circular garland of evergreen branches representing eternity. On that wreath, five candles are typically arranged. During the season of Advent, one candle on the wreath is lit each Sunday as a part of the Advent services.
Combined DNA Index System. The Combined DNA Index System (CODIS) is the United States national DNA database created and maintained by the Federal Bureau of Investigation.
From Wikipedia, the free encyclopedia. The general structure of a relational database. A relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as invented by E. F. Codd, of IBM's San Jose Research Laboratory.Many popular databases currently in use are based on the relational database model.rom Wikipedia, the free encyclopedia. The general structure of a relational database. A relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as invented by E. F. Codd, of IBM's San Jose Research Laboratory.