CREATE TABLE "packet_definitions" ( "name" TEXT NOT NULL, "description" TEXT, "id" INTEGER NOT NULL ); CREATE TABLE "field_definitions" ( "name" TEXT NOT NULL, "subname" TEXT, -- if the data type is a bitfield, we can use subname to identify the bit. "packet_name" TEXT NOT NULL, "type" TEXT NOT NULL, FOREIGN KEY("packet_name") REFERENCES packet_definitions(name) );