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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Using Joins | - Use cross joins - Use outer joins (LEFT, RIGHT, FULL) - Use self-joins - Use equijoins and non-equijoins |
| Topic 2: Using SELECT Statements | - Use the WHERE clause to restrict rows - Use the FETCH clause to limit rows returned - Use the ORDER BY clause to sort rows - Execute a basic SELECT statement |
| Topic 3: Using SQL Functions | - Use conversion functions - Use character, number, and date functions in SELECT statements |
| Topic 4: Using DDL Statements | - Create and manage views - Create and manage sequences - Create and manage indexes - Create and manage constraints - Create and manage tables |
| Topic 5: Using DML Statements | - Control transactions - Update rows in a table - Use the MERGE statement - Insert rows into a table - Delete rows from a table |
| Topic 6: Using Subqueries | - Use single-row subqueries - Use correlated subqueries - Use multiple-row subqueries |
| Topic 7: Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Topic 8: Controlling User Access | - Grant and revoke privileges - Create and manage roles - Differentiate system privileges from object privileges |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which command would drop an index from a table?
A) DELETE INDEX
B) REMOVE INDEX
C) TRUNCATE INDEX
D) DROP INDEX
2. Which data dictionary view provides information about all the columns in tables accessible to the current user?
A) ALL_TAB_COLUMNS
B) USER_COLUMNS
C) DBA_TAB_COLUMNS
D) ALL of the above
3. How are NULL values treated in relational databases?
A) NULL values are not allowed in relational databases.
B) NULL values are treated as empty strings.
C) NULL values are treated as zero.
D) NULL values represent missing or unknown data.
4. What does the INTERSECT operator do in SQL?
A) Returns rows from the first query that are not present in the second query
B) Combines rows from two queries and includes all duplicates
C) Returns rows that are present in both queries
D) Combines all rows from two queries without any conditions
5. Which SQL function can be used to replace NULL values with a specified value?
A) NVL
B) REPLACE
C) COALESCE
D) ISNULL
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: A |
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