Examine the description of the CUSTOMERS table: Which three statements will do an implicit conversion? A.SELECT * FROM customers WHERE insert_date=DATE’2019-01-01’; B.SELECT * FROM customers WHERE c ...

Examine this list of requirements for a sequence: 1.Name:EMP_SEQ 2.First value returned:1 3.Duplicates are never permitted. 4.Provide values to be inserted into the EMPLOYEES.EMPLOYEE_ID COLUMN. 5.Red ...

Which three statements are true about performing DML operations on a view with no INSTEAD OF triggers defined? A.Insert statements can always be done on a table through a view. B.The WITH CHECK clause ...

Which three are true? A.LAST_DAY returns the date of the last day of the current ,month onlyu. B.CEIL requires an argument which is a numeric data type. C.ADD_MONTHS adds a number of calendar months t ...

.Examine this statement which executes successfully: Which three are true? A.Regardless of salary,only if the employee id is less than 125,insert EMPLOYEE_ID,NANAGER_ID,SALARY into the MGR_HISTORY tab ...

Which three are true about scalar subquery expressions? A.A scalar subquery expression that returns zero rows evaluates to zoro B.They cannot be used in the values clause of an insert statement* C.The ...

Examine the description of EMPLOYEES table: Which three queries return all rows for which SALARY+COMMISSION is greate than 20000? A.SELECT * FROM employees WHERE salary+NULLF(commission,0)>=20000; B.S ...

Which three are key components of an Entity Relationship Model? A.a table B.an attribute C.a unique identifier D.an activity E.a relationship F.an entity **** 本内容被作者隐藏 ****