Printable PDFOracle 1Z0-082 Exam Questions & Answers
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Vendor: Oracle
Exam Code: 1Z0-082
Exam Name: Oracle Database Administration I
Certification Provider: Oracle
Total Questions: 162 Q&A ( View Details)
Updated on: Mar 28, 2025
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1Z0-082 Online Practice Questions and Answers
Which two are true about a SQL statement using SET operators such as UNION? (Choose two.)
A. The data type group of each column returned by the second query must match the data type of the corresponding column returned by the first query.
B. The number, but not names, of columns must be identical for all SELECT statements in the query.
C. The data type of each column returned by the second query must exactly match the data type of the corresponding column returned by the first query.
D. The names and number of columns must be identical for all SELECT statements in the query.
E. 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.
The CUSTOMERS table has a CUST_CREDIT_LIMIT column of data type NUMBER. Which two queries execute successfully? (Choose two.)
A. SELECT NVL(cust_credit_limit * .15, `Not Available') FROM customers;
B. SELECT NVL2(cust_credit_limit * .15, `Not Available') FROM customers;
C. SELECT NVL(TO_CHAR(cust_credit_limit * .15), `Not Available') FROM customers;
D. SELECT TO_CHAR(NVL(cust_credit_limit * .15, `Not Available')) FROM customers;
E. SELECT NVL2(cust_credit_limit, TO_CHAR(cust_credit_limit * .15), `Not Available') FROM customers;
Which two are benefits of external tables? (Choose two.)
A. They support DELETES which transparently deletes records in the file system as if they were table rows.
B. They can be queried, transformed, and joined with other tables without having to load the data first.
C. They support UPDATES which transparently updates records in the file system as if they were table rows.
D. The results of a complex join or aggregating function or both can be unloaded to a file for transportation to another database.
E. They can be queried while the database is in the MOUNT state like dynamic performance views.
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