数据库考试复习题目及答案.doc2、已知关系模式R(TNAME,ADDRESS,C#,CNAME),它满足第几范式,能否分解成更高一级范式?TNAMEADDRESSC#CNAMEt1a1c1n1t1a1c2n2t1a1c3n3t2a2c4n4t2a2c5n2t3a3c6n4