The purpose of Mr. Saunders' visit is to
A.make a business report to the woman.
B.be interviewed for a job in the woman's company.
C.resign from his position in the woman's company.
D.exchange stock market information with the woman.
第2题
A. You get an error because of a primary key violation.
B. The data and structure of the EMPLOYEES table are deleted.
C. The data in the EMPLOYEES table is deleted but not the structure.
D. You get an error because the statement is not syntactically correct.
第3题
A. You have no rows in the table.
B. You have an employee with the name of James.
C. You cannot roll back to the same savepoint more than once.
D. Your last update fails to update any rows because employee ID 180 was already eleted.
第5题
A.INSERT INTO employees VALUES (NULL, ‘John‘, ‘Smith‘);
B.INSERT INTO employees(first_name, last_name) VALUES(‘John‘, ‘Smith‘);
C.INSERT INTO employees VALUES (‘1000‘, ‘John‘, NULL);
D.INSERT INTO employees (first_name, last_name, employee_id) VALUES (1000, ‘John‘, ‘Smith‘);
E.INSERT INTO employees (employee_id) VALUES (1000);
F.INSERT INTO employees (employee_id, first_name, last_name) VALUES (1000, ‘John‘, ‘ ‘);
第6题
A. An error is generated.
B. You will have two identical tables in the HR schema with different names.
C. You create a table called employees in the HR schema based on you EMP table.
D. You create an alternative name for the employees table in the HR schema in your own schema.
第7题
A. INSERT INTO employees VALUES (NULL, ‘John‘, ‘smith‘);
B. INSERT INTO employees (first_name, last_name) VALUES (‘John‘, ‘smith‘);
C. INSERT INTO employees VALUES (‘1000, ‘John‘, ‘smith‘);
D. INSERT INTO employees (first_name, last_name, employee_id) VALUES (1000, ‘John‘, ‘smith‘);
E. INSERT INTO employees (employee_id) VALUES (1000);
F. INSERT INTO employees (employee_id, first_name, last_name, ) VALUES (1000, ‘John‘,‘‘);
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