正确答案:C解析:视图对应数据库三级模式中的外模式,是一个虚表,因此不会增加数据的存储空间,而且视图能够简化用户的操作。创建索引是加快表的查询速度的有效手段。因此正确答案为C(视图)。 :视图对应数据库三级模式中的外模式,是一个虚表,因此不会增加数据的存储空间,而且视图能够简化用户的操作。创建索引是加快表...
if(openFileDialog1.FileName != "") { // Assign the cursor in the stream to the form's Cursor property. this.Cursor = new Cursor(openFileDialog1.OpenFile()); } } Remarks The data stream specified by stream must contain a cursor (.cur) file. Note Animated cursors (.ani files) are...
if(openFileDialog1.FileName != "") { // Assign the cursor in the stream to the form's Cursor property. this.Cursor = new Cursor(openFileDialog1.OpenFile()); } } Remarks The data stream specified by stream must contain a cursor (.cur) file. Note Animated cursors (.ani files) are...
"cursor" must be created with SELECT ... INTO TABLE (Error 1815) "field | variable" is not unique and must be qualified (Error 1832) "field" is not related to the current work area (Error 1165) "field" phrase is not found (Error 1130) "file" is not a Visual FoxPro .EXE file ...
A. CREATE TABLE B. CREATE CURSOR C. UPDATE D. ALTER TABLE 2不属于数据定义功能的SQL命令是___。 A. CREATE TABLE B. CREATE CURSOR C. UPDATE D. ALTER TABLE 3下面不属于数据定义功能的SQL语句是:(C ) A. CREATE TABLE B. CREATE CURSOR C. UPDATE D. ALTER TABLE 4下面不属于数据定义...
The name of the Transact-SQL server cursor defined.cursor_namemust conform to the rules for identifiers. INSENSITIVE Defines a cursor that makes a temporary copy of the data to be used by the cursor. All requests to the cursor are answered from this temporary table intempdb. Therefore, base...
A Word table exists in the header or in the footer. TheSame as Previousoption is enabled between the headers or the footers. Additionally, this issue may occur if one of the following conditions is true about the table in the header or in the footer: ...
Is the name of the Transact-SQL server cursor defined. cursor_name must conform to the rules for identifiers. For more information about rules for identifiers, seeUsing Identifiers As Object Names. INSENSITIVE Defines a cursor that makes a temporary copy of the data to be used by the cursor....
A Word table exists in the header or in the footer. TheSame as Previousoption is enabled between the headers or the footers. Additionally, this issue may occur if one of the following conditions is true about the table in the header or in the footer: ...
百度试题 结果1 题目建立表结构的SQL语句是( )。 A. CREATE CURSOR B. CREATE TABLE C. CREATE INDEX D. CREATE VIEW 相关知识点: 试题来源: 解析 B 反馈 收藏