2025年计算机二级MySQL重要警示试题及答案.docx
2025年计算机二级MySQL重要警示试题及答案
姓名:____________________
一、单项选择题(每题2分,共10题)
1.MySQL数据库中,以下哪个是错误的用户权限设置?
A.SELECT
B.INSERT
C.DELETE
D.UPDATE
2.在MySQL中,以下哪个是正确的数据类型定义?
A.INT(5)
B.VARCHAR(5)
C.CHAR(5)
D.TEXT(5)
3.在MySQL中,要删除一个名为“students”的表,以下哪个是正确的SQL语句?
A.DROPTABLEstudents;
B.DELETETABLEstudents;
C.ERASETABLEstudents;
D.TRUNCATETABLEstudents;
4.在MySQL中,以下哪个是正确的日期时间类型?
A.TIMESTAMP
B.DATE
C.TIME
D.ALLOFTHEABOVE
5.在MySQL中,以下哪个是正确的创建索引的语句?
A.CREATEINDEXindex_nameONtable_name(column_name);
B.INDEXindex_nameONtable_name(column_name);
C.INDEXtable_nameONcolumn_name(index_name);
D.CREATEINDEXONtable_name(column_name);
6.在MySQL中,以下哪个是错误的约束条件?
A.NOTNULL
B.UNIQUE
C.DEFAULT
D.FOREIGNKEY
7.在MySQL中,以下哪个是正确的视图创建语句?
A.CREATEVIEWview_nameASSELECT*FROMtable_name;
B.VIEWview_nameASSELECT*FROMtable_name;
C.SELECT*INTOview_nameFROMtable_name;
D.CREATEVIEWtable_nameASSELECT*FROMview_name;
8.在MySQL中,以下哪个是正确的存储过程创建语句?
A.CREATEPROCEDUREprocedure_name(INparameter_nameparameter_type);
B.PROCEDUREprocedure_name(INparameter_nameparameter_type);
C.CREATEPROCEDUREprocedure_name(OUTparameter_nameparameter_type);
D.PROCEDUREprocedure_name(OUTparameter_nameparameter_type);
9.在MySQL中,以下哪个是正确的触发器创建语句?
A.CREATETRIGGERtrigger_nameBEFOREINSERTONtable_nameFOREACHROW;
B.TRIGGERtrigger_nameBEFOREINSERTONtable_nameFOREACHROW;
C.CREATETRIGGERtrigger_nameAFTERINSERTONtable_nameFOREACHROW;
D.TRIGGERtrigger_nameAFTERINSERTONtable_nameFOREACHROW;
10.在MySQL中,以下哪个是错误的SQL语句?
A.SELECT*FROMtable_nameWHEREcolumn_name=value;
B.SELECT*FROMtable_nameWHEREcolumn_nameLIKE%value%;
C.SELECT*FROMtable_nameWHEREcolumn_nameIN(value1,value2,value3);
D.SELECT*FROMtable_nameWHEREcolumn_nameBETWEENvalue1ANDvalue2;
二、多项选择题(每题3分,共10题)
1.MySQL数据库中,以下哪些是常用的数据类型?
A.INT
B.VARCHAR
C.DATE
D.FLOAT
E.BOOLEAN
2.在MySQL中,以下哪些是常用的存储引擎?
A.MyISAM
B.InnoDB
C.MERGE
D.CSV