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Oracle Database SQL 認定 1z0-071 試験問題 (Q57-Q62):

質問 # 57
Choose the best answer.
Examine the description of the EMPLOYEES table:

Which query is valid?

A. SELECT depe_id,join_date,SUM(salary) FROM employees GROUP BY dept_id:
B. SELECT dept_id,MAX(AVG(salary)) FROM employees GROUP BY dept_id;
C. SELECT dept_id,AVG(MAX(salary)) FROM employees GROUP BY dapt_id;
D. SELECT dept_id, join_date,SUM(salary) FROM employees GROUP BY dept_id, join_date;

正解：D

質問 # 58
Which three are true about privileges?

A. Only users with the GRANT ANY PRIVILEGE privilege can grant and revoke system privileges from other users.
B. All types of schema objects have associated object privileges .
C. Only users with the DBA role can create roles .
D. A combination of object and system privileges can be granted to a role.
E. Object privileges granted on a table automatically apply to all synonyms for that table.
F. Schema owners can grant object privileges on objects in their schema to any other user or role.

正解：A、D、F

解説：
A . Schema owners indeed can grant privileges on objects in their schema to other users or roles, making this statement true.
B . Roles in Oracle can be granted both object and system privileges, making this statement true as well.
C . Not all types of schema objects have associated object privileges. For example, synonyms do not have object privileges because they are just aliases for other objects.
D . The DBA role is a powerful role, but creating roles can be done by any user granted the necessary privileges, not just users with the DBA role.
E . Object privileges on a table do not automatically apply to all synonyms for that table. Synonyms are separate objects that must have privileges granted explicitly.
F . The privilege to grant system privileges is controlled by the GRANT ANY PRIVILEGE system privilege, making this statement true.
Reference:
Oracle Database SQL Language Reference, 12c Release 1 (12.1): "Privileges" Oracle Database Security Guide, 12c Release 1 (12.1): "Administering User Privileges, Roles, and Profiles"

質問 # 59
The PROD_ID column is the foreign key in the SALES table.Which references the PRODUCTS table.
Similarly,the CUST_ID and TIME_ID columns are Also foreign keys in the SALES table referencing the CUSTOMERS and TIMES tables, respectively.
Evaluate the following CREATE TABLE command:
CREATE TABLE new_sales(prod_id, I cust_id, order_date DEFAULT SYSDATE)
AS SELECT I prod_id,cust_id,time_id FROM sales.
Which statement is true regarding the above command?

A. The NEW_SALES table would get created and all the FOREIGN KEY constraints defined on the specified columns would be passed to the new table
B. The NEW_SALES table would not get created because the column names in the CREATE TABLE command and the SELECT clause I do not match.
C. The NEW_SALES table would get created and all the NOT NULL constraints defined on the specified columns would be passed to the new table.
D. The NEW_SALES table would not get created because the DEFAULT value cannot be specified in the column definition.

正解：B

解説：
The statement true regarding the CREATE TABLE command:
* C. The NEW_SALES table would not get created because the column names in the CREATE TABLE command and the SELECT clause do not match: The SQL command tries to create a table with columns prod_id, cust_id, and order_date, but the SELECT statement specifies columns prod_id
, cust_id, and time_id. The mismatch in column names and the number of columns specified will prevent the table from being created.
Incorrect options:
* A: It is possible to specify a DEFAULT value in the column definition when creating a table with the CREATE TABLE AS SELECT syntax.
* B: Not all NOT NULL constraints (or any other constraints, for that matter) are automatically passed to the new table unless explicitly stated in the CREATE TABLE statement.
* D: FOREIGN KEY constraints are not automatically included when creating a table using the CREATE TABLE AS SELECT syntax; they would need to be added explicitly afterwards.

質問 # 60
Examine the description of the PRODUCTS table:

Which three queries use valid expressions?

A. SELECT product_id, (unit_price * 0.15 / (4.75 + 552.25)) FROM products;
B. SELECT ptoduct_id, (expiry_date-delivery_date) * 2 FROM products;
C. SPLECT product_id, expiry_date * 2 FROM products;
D. SELECT product_id,unit_price || "Discount", unit_price + surcharge-discount FROM products;
E. SELEGT product_id, unit_price, unit_price + surcharge FROM products;
F. SELECT produet_id, unit_pricer, 5 "Discount",unit_price+surcharge-discount FROM products;

正解：A、B、E

解説：
B). SELECT product_id, (unit_price * 0.15 / (4.75 + 552.25)) FROM products; C. SELECT product_id, (expiry_date - delivery_date) * 2 FROM products; E. SELECT product_id, unit_price, unit_price + surcharge FROM products; Comprehensive and Detailed Explanation WITH all References:
A). This is invalid because "Discount" is a string literal and cannot be used without quotes in an arithmetic operation. Also, there is a typo in unit_pricer, and 'discount' is not a defined column in the table. B. This is valid. It shows a mathematical calculation with unit_price, which is of NUMBER type. Division and multiplication are valid operations on numbers. C. This is valid. The difference between two DATE values results in the number of days between them, and multiplying this value by a number is a valid operation. D.
This is invalid because expiry_date is of DATE type and cannot be multiplied by a number. Also, there's a typo: "SPLECT" should be "SELECT". E. This is valid. Both unit_price and surcharge are NUMBER types, and adding them together is a valid operation. F. This is invalid because concatenation operator || is used between a number (unit_price) and a string literal "Discount", which is not enclosed in single quotes, and
'discount' is not a defined column in the table.
In SQL, arithmetic operations on numbers and date arithmetic are valid expressions. Concatenation is also a valid expression when used correctly between string values or literals. Operations that involve date types should not include multiplication or division by numbers directly without a proper interval type in Oracle SQL.
These rules are detailed in the Oracle Database SQL Language Reference, where expressions, datatype precedence, and operations are defined.

質問 # 61
Examine the description of the EMP_DETAILS table given below:

Which two statements are true regarding SQL statements that can be executed on the EMP_DETAIL TABLE?

A. You can alter the table to include the NOT NULL constraint on the EMP_IMAGE column.
B. An EMP_IMAGE column can be included in the GROUP BY clause.
C. An EMP_IMAGE column cannot be included in the ORDER BY clause.
D. You cannot add a new column to the table with LONG as the data type.

正解：C、D

質問 # 62
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Oracle 1z0-071無料サンプル & 1z0-071学習教材

Oracle 1z0-071無料サンプル: Oracle Database SQL - Pass4Test 最高のプロバイダー 学習教材

Oracle Database SQL 認定 1z0-071 試験問題 (Q57-Q62):

Oracle 1z0-071無料サンプル: Oracle Database SQL - Pass4Test 最高のプロバイダー学習教材