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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: Controlling User Access | - Differentiate system privileges from object privileges - Create and manage roles - Grant and revoke privileges |
| Topic 3: Using DML Statements | - Update rows in a table - Delete rows from a table - Control transactions - Insert rows into a table - Use the MERGE statement |
| Topic 4: Using SQL Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Topic 5: Using Subqueries | - Use single-row subqueries - Use correlated subqueries - Use multiple-row subqueries |
| Topic 6: Using SELECT Statements | - Execute a basic SELECT statement - Use the WHERE clause to restrict rows - Use the FETCH clause to limit rows returned - Use the ORDER BY clause to sort rows |
| Topic 7: Using DDL Statements | - Create and manage constraints - Create and manage sequences - Create and manage views - Create and manage indexes - Create and manage tables |
| Topic 8: Using Joins | - Use cross joins - Use outer joins (LEFT, RIGHT, FULL) - Use self-joins - Use equijoins and non-equijoins |
Oracle Database 23ai SQL Associate Sample Questions:
1. What is the primary purpose of an index in SQL?
A) To ensure uniqueness of values in a column
B) To store metadata about a table
C) To improve the performance of data retrieval queries
D) To enforce data integrity constraints
2. Which command grants a user the ability to query data from a specific table?
A) ALLOW SELECT ON table_name TO user_name;
B) ENABLE SELECT ON table_name TO user_name;
C) GRANT SELECT ON table_name TO user_name;
D) GRANT ALL ON table_name TO user_name;
3. How can you ensure that data is sorted in descending order in a SQL query?
A) Use the DISTINCT keyword
B) Use the ASC keyword
C) Use the DESC keyword
D) Use the ORDER keyword
4. Which data dictionary view lists all indexes created by the current user?
A) ALL_INDEXES
B) DBA_INDEXES
C) INDEX_LIST
D) USER_INDEXES
5. What is the difference between UNION and UNION ALL?
A) UNION removes duplicates, while UNION ALL includes all rows, including duplicates.
B) UNION combines columns, while UNION ALL combines rows.
C) UNION works with subqueries, while UNION ALL does not.
D) UNION includes all rows, while UNION ALL removes duplicates.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: C | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: A |
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