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html语言中,创建一个位于文档内部的靶位的标记是?()
- A、<name="NAME">
- B、<name="NAME"></name>
- C、<a name="NAME"></a>
- D、<a name="NAME"
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单选题Which syntax turns an existing constraint on?()A
ALTER TABLE table_name ENABLE constraint_name;B
ALTER TABLE table_name STATUS = ENABLE CONSTRAINT constraint _ name;C
ALTER TABLE table_name ENABLE CONSTRAINT constraint _ name;D
ALTER TABLE table_name TURN ON CONSTRAINT constraint _ name;
考题
单选题Which syntax turns an existing constraint on?()A
ALTER TABLE table_name ENABLE constraint_name;B
ALTER TABLE table_name STATUS = ENABLE CONSTRAINT constraint_name;C
ALTER TABLE table_name ENABLE CONSTRAINT constraint_name;D
ALTER TABLE table_name STATUS ENABLE CONSTRAINT constraint_name;E
ALTER TABLE table_name TURN ON CONSTRAINT constraint_name;
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httpGet(url,name);B
url=url+?name=+name;C
list.add(newBasicNameValuePair(name,name));D
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单选题Examine the structure of the EMPLOYEES table: Column name Data type Remarks EMPLOYEE_ID NUMBER NOT NULL, Primary Key LAST_NAME VARCNAR2(30) FIRST_NAME VARCNAR2(30) JOB_ID NUMBER SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER You need to create an index called NAME_IDX on the first name and last name fields of the EMPLOYEES table. Which SQL statement would you use to perform this task? ()A
CREATE INDEX NAME _IDX (first_name, last_name);B
CREATE INDEX NAME _IDX (first_name, AND last_name)C
CREATE INDEX NAME_IDX ON (First_name, last_name);D
CREATE INDEX NAME_IDX ON employees (First_name, AND last_name);E
CREATE INDEX NAME_IDX ON employees (First_name, last_name);F
CREATE INDEX NAME_IDX FOR employees (First_name, last_name);
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