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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Topic 2: Using DML Statements | - Update rows in a table - Insert rows into a table - Control transactions - Delete rows from a table - Use the MERGE statement |
| Topic 3: Using DDL Statements | - Create and manage indexes - Create and manage views - Create and manage constraints - Create and manage tables - Create and manage sequences |
| Topic 4: Using Joins | - Use equijoins and non-equijoins - Use cross joins - Use outer joins (LEFT, RIGHT, FULL) - Use self-joins |
| Topic 5: Using SQL Functions | - Use conversion functions - Use character, number, and date functions in SELECT statements |
| Topic 6: Using SELECT Statements | - Execute a basic SELECT statement - Use the FETCH clause to limit rows returned - Use the ORDER BY clause to sort rows - Use the WHERE clause to restrict rows |
| Topic 7: Controlling User Access | - Create and manage roles - Grant and revoke privileges - Differentiate system privileges from object privileges |
| Topic 8: Using Subqueries | - Use multiple-row subqueries - Use correlated subqueries - Use single-row subqueries |
Oracle Database 23ai SQL Associate Sample Questions:
1. What is the result of using the following SQL query?
SELECT 100 + NULL AS result;
A) An error
B) NULL
C) 0
D) 100
2. What is a subquery in SQL?
A) A query that combines data from multiple tables
B) A query used for joining two or more tables
C) A query inside another query
D) A query used to create a table
3. What happens when a unique index is created on a table column?
A) The column cannot contain duplicate values.
B) The column can only contain NULL values.
C) The column data type is converted to a primary key.
D) The column values are automatically encrypted.
4. Which type of subquery returns exactly one value?
A) Multiple-row subquery
B) Inline view
C) Scalar subquery
D) Correlated subquery
5. What does the following query return?
SELECT ROUND(123.456, 1) AS rounded_value FROM dual;
A) 123.5
B) 123.4
C) 124
D) 123.45
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: A |
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