RELIABLE ORACLE 1Z0-071 TEST LABS & 1Z0-071 UPDATED TESTKINGS

Reliable Oracle 1z0-071 Test Labs & 1z0-071 Updated Testkings

Reliable Oracle 1z0-071 Test Labs & 1z0-071 Updated Testkings

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Oracle 1z1-071 certification exam covers a broad range of topics related to SQL programming language, such as data definition language (DDL), data manipulation language (DML), and data control language (DCL). In addition, the exam also covers various topics related to SQL functions, such as single-row functions, group functions, and conversion functions. 1z0-071 exam also assesses the candidate's knowledge of schema objects, such as tables, views, indexes, and sequences.

Oracle 1z0-071 Certification Exam is a rigorous test that requires candidates to prepare thoroughly. Oracle offers a range of resources to help candidates prepare for the exam, including training courses, study guides, and practice exams. Candidates are also encouraged to gain hands-on experience with Oracle databases to fully understand the concepts covered in the exam.

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Oracle Database SQL Sample Questions (Q265-Q270):

NEW QUESTION # 265
Which two true about a sql statement using SET operations such as UNION?

  • A. The data type of each column retuned by the second query must exactly match the data type of the corresponding column returned by the first query
  • B. The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query
  • C. The names and number of columns must be identical for all SELECT statements in the query.
  • D. The data type group of each column returned by the second query must match the data type group of the corresponding column returned by the first query
  • E. The number, but not names, of columns must be identical for all SELECT statements in the query

Answer: B,E

Explanation:
In the context of SQL statements using SET operations like UNION in Oracle Database 12c:
* A. The data type of each column returned by the second query must be implicitly convertible to
* the data type of the corresponding column returned by the first query. This is correct. Oracle allows the union of columns as long as their data types are implicitly convertible, not necessarily identical.
* C. The number, but not names, of columns must be identical for all SELECT statements in the query. This is correct. For a UNION operation to be valid, all SELECT statements involved must have the same number of columns, although their names and exact data types need not match.
Options B, D, and E are incorrect:
* B is incorrect because exact data type matches are not required, only that they be implicitly convertible.
* D is also incorrect for the same reason as B; it's enough that the types are compatible, not identical.
* E is incorrect as the names


NEW QUESTION # 266
Examine the structure of the MEMBERStable:
Name Null? Type
- --------------- ----------------- ---------------------------
MEMBER_ID NOT NULL VARCHAR2 (6)
FIRST_NAME VARCHAR2 (50)
LAST_NAME NOT NULL VARCHAR2 (50)
ADDRESS VARCHAR2 (50)
CITY VARCHAR2 (25)
STATE VARCHAR2 (3)
You want to display details of all members who reside in states starting with the letter A followed by exactly one character.
Which SQL statement must you execute?

  • A. SELECT * FROM MEMBERS WHERE state LIKE 'A_';
  • B. SELECT * FROM MEMBERS WHERE state LIKE 'A_%';
  • C. SELECT * FROM MEMBERS WHERE state LIKE '%A_';
  • D. SELECT * FROM MEMBERS WHERE state LIKE 'A%';

Answer: A


NEW QUESTION # 267
Evaluate the following CRTEATE TABLE commands:
CREATE_TABLE orders
(ord_no NUMBER (2) CONSTRAINT ord_pk PRIMARY KEY,
ord_date DATE,
cust_id NUMBER (4) );
CREATE TABLE ord_items
(ord _no NUMBER (2),
item_no NUMBER(3),
qty NUMBER (3) CHECK (qty BETWEEEN 100 AND 200),
expiry_date date CHECK (expiry_date> SYSDATE),
CONSTRAINT it_pk PRIMARY KEY (ord_no, item_no),
CONSTARAINT ord_fk FOREIGN KEY (ord_no) REFERENCES orders (ord_no) );
The above command fails when executed. What could be the reason?

  • A. SYSDATE cannot be used with the CHECK constraint.
  • B. The BETWEEN clause cannot be used for the CHECK constraint.
  • C. The CHECK constraint cannot be placed on columns having the DATE data type.
  • D. ORD_NO and ITEM_NO cannot be used as a composite primary key because ORD_NO is also the FOREIGN KEY.

Answer: A


NEW QUESTION # 268
Which two are true about dropping columns from a table?

  • A. A column drop is implicitly committed.
  • B. Multiple columns can be dropped simultaneously using the ALTER TABLEcommand.
  • C. A column can be removed only if it contains no data.
  • D. A column that is referenced by another column in any other table cannot be dropped.
  • E. A primary key column cannot be dropped.
  • F. A column must be set as unused before it is dropped from a table.

Answer: B,E

Explanation:
Explanation/Reference: https://oracle-base.com/articles/8i/dropping-columns


NEW QUESTION # 269
View the Exhibit and examine the structure of the ORDERS table. The ORDER_ID column is the PRIMARY KEY in the ORDERS table.

Evaluate the following CREATE TABLE command:
CREATE TABLE new_orders(ord_id, ord_date DEFAULT SYSDATE, cus_id)
AS
SELECT order_id.order_date,customer_id
FROM orders;
Which statement is true regarding the above command?

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

Answer: D


NEW QUESTION # 270
......

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