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Oracle 1z0-082 Exam Dumps
Oracle Database Administration I
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Oracle 1z0-082 Sample Questions
Question # 1Which two statements are true about the results of using the INTERSECT operator in compound queries? (Choose two.)
A. Column names in each SELECT in the compound query can be different
B. The number of columns in each SELECT in the compound query can be different
C. Reversing the order of the intersected tables can sometimes affect the output
D. INTERSECT returns rows common to both sides of the compound query
E. INTERSECT ignores NULLs
Question # 2
Which two statements are true regarding the UNION and UNION ALL operators? (Choose two.)
A. Duplicates are eliminated automatically by the UNION ALL operator
B. The number of columns selected in each SELECT statement must be identical
C. The names of columns selected in each SELECT statement must be identical
D. The output is sorted by the UNION ALL operator
E. NULLS are not ignored during duplicate checking
Question # 3
Which four statements are true regarding primary and foreign key constraints and the effect they can have on table data? (Choose four.)
A. A table can have only one primary key but multiple foreign keys
B. A table can have only one primary key and foreign key
C. The foreign key columns and parent table primary key columns must have the same names
D. It is possible for child rows that have a foreign key to remain in the child table at the time the parent row is deleted
E. It is possible for child rows that have a foreign key to be deleted automatically from the child table at the time the parent row is deleted
F. Only the primary key can be defined at the column and table level
G. Primary key and foreign key constraints can be defined at both the column and table level
Question # 4
Which two statements are true about single row functions? (Choose two.)
A. MOD : returns the quotient of a division operation
B. FLOOR : returns the smallest integer greater than or equal to a specified number
C. TRUNC : can be used to combine any number of values
D. CONCAT : can be used to combine any number of values
E. CEIL : can be used for positive and negative numbers
Question # 5
The EMPLOYEES table contains columns EMP_ID of data type NUMBER and HIRE_DATE of data type DATE.You want to display the date of the first Monday after the completion of six months since hiring.The NLS_TERRITORY parameter is set to AMERICA in the session and, therefore, Sunday is the first day on the wee.Which query can be used?
A. SELECT emp_id, ADD_MONTHS(hire_date, 6), NEXT_DAY(‘MONDAY’) FROM employees;
B. SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), ‘MONDAY’) FROM employees;
C. SELECT emp_id, NEXT_DAY(MONTHS_BETWEEN(hire_date, SYSDATE), 6) FROM employees;
D. SELECT emp_id, NEXT_DAY(ADD_MONTHS(hire_date, 6), 1) FROM employees;
Question # 6
Which three statements are true about dropping and unused columns in an Oracle database? (Choose three.)
A. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
B. An UNUSED column’s space is reclaimed automatically when the block containing that column is next queried.
C. An UNUSED column’s space is reclaimed automatically when the row containing that column is next queried.
D. Partition key columns cannot be dropped.
E. A DROP COLUMN command can be rolled back
F. A column that is set to UNUSED still counts towards the limit of 1000 columns per table
Question # 7
Which three statements are true regarding indexes? (Choose three.)
A. A UNIQUE index can be altered to be non-unique
B. A SELECT statement can access one or more indices without accessing any tables
C. A table belonging to one user can have an index that belongs to a different user
D. An update to a table can result in updates to any or all of the table’s indexes
E. When a table is dropped and is moved to the RECYCLE BIN, all indexes built on that table are permanently dropped
F. An update to a table can result in no updates to any of the table’s indexes