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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Using Subqueries | - Use correlated subqueries - Use single-row subqueries - Use multiple-row subqueries |
| Using DML Statements | - Control transactions - Update rows in a table - Delete rows from a table - Insert rows into a table - Use the MERGE statement |
| Using Joins | - Use equijoins and non-equijoins - Use self-joins - Use outer joins (LEFT, RIGHT, FULL) - Use cross joins |
| Using SELECT Statements | - Use the ORDER BY clause to sort rows - Execute a basic SELECT statement - Use the WHERE clause to restrict rows - Use the FETCH clause to limit rows returned |
| Controlling User Access | - Create and manage roles - Differentiate system privileges from object privileges - Grant and revoke privileges |
| Using SQL Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Using DDL Statements | - Create and manage indexes - Create and manage views - Create and manage tables - Create and manage constraints - Create and manage sequences |
| Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which of the following SET operators combines results from two queries and removes duplicates?
A) INTERSECT
B) MINUS
C) UNION
D) UNION ALL
2. What happens when the maximum value of a sequence is reached?
A) An error is raised, and the sequence must be recreated.
B) The sequence starts decrementing values.
C) The sequence resets to the starting value if the CYCLE option is specified.
D) The sequence stops generating values.
3. Which function returns the current system date and time in the database session's time zone?
A) CURRENT_TIMESTAMP
B) SYSTEM_TIME
C) SYSDATE
D) LOCAL_TIME
4. How can you ensure that data is sorted in descending order in a SQL query?
A) Use the ORDER keyword
B) Use the ASC keyword
C) Use the DESC keyword
D) Use the DISTINCT keyword
5. Which clause in an UPDATE statement typically uses a subquery to assign values to columns?
A) FROM
B) SET
C) HAVING
D) WHERE
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: B |
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