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Share some Oracle Database 1Z0-071 exam questions and answers below.
Which two statements are true regarding multiple-row subqueries? (Choose two.)
A. They can contain group functions.
B. They always contain a subquery within a subquery.
C. They use the < ALL operator to imply less than the maximum.
D. They can be used to retrieve multiple rows from a single table only.
E. They should not be used with the NOT IN operator in the main query if NULL is likely to be a part of the result of the subquery.
Answer: A,E
Which two statements are true about sequences created in a single instance database? (Choose two.)
A. CURRVAL is used to refer to the last sequence number that has been generated
B. DELETEwould remove a sequence from the database
C. The numbers generated by a sequence can be used only for one table
D. When the MAXVALUE limit for a sequence is reached, you can increase the MAXVALUE limit by using the ALTER SEQUENCE statement
E. When a database instance shuts down abnormally, the sequence numbers that have been cached but not used would be available once again when the database instance is restarted
Answer: A,D
Which statement is true regarding external tables?
A. The default REJECT LIMIT for external tables is UNLIMITED.
B. The data and metadata for an external table are stored outside the database.
C. ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.
D. The CREATE TABLE AS SELECT statement can be used to unload data into regular table in the database from an external table.
Answer: D
Which two statements are true regarding the GROUP BY clause in a SQL statement? (Choose two.)
A. You can use column alias in the GROUP BY clause.
B. Using the WHERE clause after the GROUP BY clause excludes the rows after creating groups.
C. The GROUP BY clause is mandatory if you are using an aggregate function in the SELECT clause.
D. Using the WHERE clause before the GROUP BY clause excludes the rows before creating groups.
E. If the SELECT clause has an aggregate function, then those individual columns without an aggregate function in the SELECT clause should be included in the GROUP BY clause.
Answer: D,E
Evaluate the following two queries:
Which statement is true regarding the above two queries?
A. Performance would improve query 2 only if there are null values in the CUST__CREDIT__LIMIT column.
B. There would be no change in performance.
C. Performance would degrade in query 2.
D. Performance would improve in query 2.
Answer: B
Which two tasks can be performed by using Oracle SQL statements?
A. changing the password for an existing database
B. connecting to a database instance
C. querying data from tables across databases
D. starting up a database instance
E. executing operating system (OS) commands in a session
Answer: C,E
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Share some Oracle Database 1Z0-071 exam questions and answers below.
Which two statements are true regarding multiple-row subqueries? (Choose two.)
A. They can contain group functions.
B. They always contain a subquery within a subquery.
C. They use the < ALL operator to imply less than the maximum.
D. They can be used to retrieve multiple rows from a single table only.
E. They should not be used with the NOT IN operator in the main query if NULL is likely to be a part of the result of the subquery.
Answer: A,E
Which two statements are true about sequences created in a single instance database? (Choose two.)
A. CURRVAL is used to refer to the last sequence number that has been generated
B. DELETE
C. The numbers generated by a sequence can be used only for one table
D. When the MAXVALUE limit for a sequence is reached, you can increase the MAXVALUE limit by using the ALTER SEQUENCE statement
E. When a database instance shuts down abnormally, the sequence numbers that have been cached but not used would be available once again when the database instance is restarted
Answer: A,D
Which statement is true regarding external tables?
A. The default REJECT LIMIT for external tables is UNLIMITED.
B. The data and metadata for an external table are stored outside the database.
C. ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.
D. The CREATE TABLE AS SELECT statement can be used to unload data into regular table in the database from an external table.
Answer: D
Which two statements are true regarding the GROUP BY clause in a SQL statement? (Choose two.)
A. You can use column alias in the GROUP BY clause.
B. Using the WHERE clause after the GROUP BY clause excludes the rows after creating groups.
C. The GROUP BY clause is mandatory if you are using an aggregate function in the SELECT clause.
D. Using the WHERE clause before the GROUP BY clause excludes the rows before creating groups.
E. If the SELECT clause has an aggregate function, then those individual columns without an aggregate function in the SELECT clause should be included in the GROUP BY clause.
Answer: D,E
Evaluate the following two queries:
Which statement is true regarding the above two queries?
A. Performance would improve query 2 only if there are null values in the CUST__CREDIT__LIMIT column.
B. There would be no change in performance.
C. Performance would degrade in query 2.
D. Performance would improve in query 2.
Answer: B
Which two tasks can be performed by using Oracle SQL statements?
A. changing the password for an existing database
B. connecting to a database instance
C. querying data from tables across databases
D. starting up a database instance
E. executing operating system (OS) commands in a session
Answer: C,E
According to the research of the past exam exercises and answers, Passtcert can effectively capture the content of Oracle certification 1Z0-071 exam. Passtcert Oracle Database 1Z0-071 practice exams have a very close similarity with real examination exercises.Passtcert Oracle Database 1Z0-071 practice exams are virtually risk-free for you at the time of purchase. Before you buy, you can enter Passtcert website to download the free part of the exam questions and answers as a trial.
Passtcert is a website specifically provide the certification exam information sources for IT professionals. Through many reflects from people who have purchase Passtcert Oracle Database 1Z0-071 practice exams, Passtcert is proved to be the best website to provide the source of information about certification exam. The product of Passtcert is a very reliable training tool for you. The Oracle Database 1Z0-071 practice exams provided by Passtcert is very accurate. Our Passtcert senior experts are continuing to enhance the quality of our training materials.
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