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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - Restricting group results - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Nested functions - Character functions for string manipulation - Date arithmetic and date functions - Data type conversion: implicit and explicit |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| DDL for Tables and Relationships | 15% | - Constraints management - TRUNCATE TABLE statement - Drop columns, set unused columns - Views management - Temporary and external tables - Table structure, columns, data types - CREATE TABLE statement |
| Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Retrieving and Sorting Data | 15% | - Operator precedence rules - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands - Sorting query results - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - Limiting rows and substitution variables |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
Oracle Database 23ai SQL Associate Sample Questions:
Which of the following statements is true about constraints in Oracle Database?
- A. Constraints cannot reference other tables.
- B. Constraints can only be added when creating a table.
- C. Constraints can be added or modified using the ALTER TABLE statement.
- D. Constraints are automatically dropped when rows are deleted.
What happens when the TRUNCATE TABLE statement is executed?
- A. Deletes only the last row in the table
- B. Deletes all rows in the table and logs the operation for rollback
- C. Deletes all rows in the table without logging the operation for rollback
- D. Deletes the table structure permanently
Which Oracle SQL function returns the current date and time, including time zone information?
- A. CURRENT_DATE
- B. SYSDATE
- C. CURRENT_TIMESTAMP
- D. NOW
What happens when the maximum value of a sequence is reached?
- A. The sequence starts decrementing values.
- B. The sequence stops generating values.
- C. An error is raised, and the sequence must be recreated.
- D. The sequence resets to the starting value if the CYCLE option is specified.
What is the result of using the following SQL query?
SELECT 100 + NULL AS result;
- A. An error
- B. NULL
- C. 0
- D. 100




