网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
在Protel99 SE原理图编辑器中的光标形状和大小的选择上，在连线、放置元件等操作过程中，为准确定位更容易看清当前光标的位置可选择（）。
A.Small Cursor 90
B.Large Cursor 90
C.Small Cursor 45
D.随意
参考答案
更多 “ 在Protel99 SE原理图编辑器中的光标形状和大小的选择上，在连线、放置元件等操作过程中，为准确定位更容易看清当前光标的位置可选择（）。A.Small Cursor 90B.Large Cursor 90C.Small Cursor 45D.随意 ” 相关考题
考题
（ 32 ） 查询 “ 读者 ” 表的所有记录并存储于临时表文件 one 中的 SQL 语句是A ） SELECT * FROM 读者 INTO CURSOR oneB ） SELECT * FROM 读者 TO CURSOR oneC ） SELECT * FROM 读者 INTO CURSOR DBF oneD ） SELECT * FROM 读者 TO CURSOR DBF one
考题
在Protel99 SE原理图编辑器中的光标形状和大小的选择上，在元件移动、对齐操作的过程中，为准确定位，常采用（）。A.Small Cursor 90B.Large Cursor 90C.Small Cursor 45D.随意
考题
在Protel99 SE原理图编辑器中的光标形状和大小的选择上，在放置总线分支时，为准确定位以避免45°光标与总线分支重叠可选用（）。A.Small Cursor 90B.Large Cursor 90C.Small Cursor 45D.随意
考题
查询“教师表”的全部记录并存储于临时文件one．dbf中的SQL命令是A．SELECT*FROM教师表INTO CURSOR oneB．SELECT*FROM教师表TO CURSOR 0neC．SELECT*FROM教师表INTO CURSOR DBF oneD．SELECT*FROM教师表TO CURSOR DBF one
考题
查询“教师表”的全部记录并存储于临时文件one．dbf中的SQL命令是（ ）。A.SELECT*FRM教师表INTO C4JRSOR oneB.SELECT*FROM教师表TO CURSOR oneC.SELECT*FROM教师表INTO CURSOR DBF oneD.SELECT*教师表TO CURSOR DBF one
考题
查询学生表S的全部记录并存储于临时表文件one中的SQL命令是（ ）。A.SELECT*FROM学生表INTO CURSOR oneB.SELECT*FROM学生表To CURSoR oneC.SELECT*FROM学生表INTO CURSOR DBF oneD.SELECT*FROM学生表TO CURSOR DBF one
考题
查询学生表 S 的全部记录并 存储 于临时表文件 one 中的 SQL 命令是A)SELECT * FROM 学生表 INTO CURSOR oneB)SELECT * FROM 学生表 TO CURSOR oneC)SELECT * FROM 学生表 INTO CURSOR DBF oneD)SELECT * FROM 学生表 TO CURSOR DBF one
考题
（ 31 ）查询 “ 教师表 ” 的全部记录并存储于 临 时文件 one.dbf 中的 SQL 命令是A ） SELECT * FROM 教师表 INTO CURSOR oneB ） SELECT * FROM 教师表 TO CURSOR oneC ） SELECT * FROM 教师表 INTO CURSOR DBF oneD) SELECT * FROM 教师表 TO CURSOR DBF one
考题
在Oracle中，PL/SQL块中定义了一个带参数的游标：CURSOR emp_cursor（dnum NUMBER）IS SELECT sal，comm FROM emp WHERE deptno = dnum；那么正确打开此游标的语句是（）A、OPEN emp_cursorB、OPEN emp_cursor FOR 20C、OPEN emp_cursor USING 20D、FOR emp_rec IN emp_cursor（20） LOOP … END LOOP
考题
Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?（）A、The cursor is only protected from updates and deletes by concurrent applications.B、The row is only protected from positioned updates and deletes that reference another cursor of the same application.C、The cursor is protected from positioned updates and deletes that reference another cursor of a different application.D、The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application.
考题
Oracle9i extends the cursor sharing functionality with the new value of SIMILAR for the CURSOR_SHARING parameter. With CURSOR_SHARING = SIMILAR， cursors are shared for safe literals only. What is meant by ‘safe literals only’？（） A、No literal value is substituted for a shared cursor. B、Different execution plans are generated for substituted literal values. C、The substitution of a literal value will produce different execution plans. D、The substitution of any literal value will produce exactly the same execution plan.
考题
单选题Oracle9i extends the cursor sharing functionality with the new value of SIMILAR for the CURSOR_SHARING parameter. With CURSOR_SHARING = SIMILAR， cursors are shared for safe literals only. What is meant by ‘safe literals only’？（）A
No literal value is substituted for a shared cursor. B
Different execution plans are generated for substituted literal values. C
The substitution of a literal value will produce different execution plans. D
The substitution of any literal value will produce exactly the same execution plan.
考题
单选题Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?（）A
The cursor is only protected from updates and deletes by concurrent applications.B
The row is only protected from positioned updates and deletes that reference another cursor of the same application.C
The cursor is protected from positioned updates and deletes that reference another cursor of a different application.D
The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application.
热门标签
最新试卷
