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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 2: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Sorting query results - DEFINE and VERIFY commands - Operators, literals, DISTINCT keyword - Operator precedence rules - Arithmetic expressions and NULL values - Limiting rows and substitution variables |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 4: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 5: Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - Data type conversion: implicit and explicit - Character functions for string manipulation - Nested functions - ROUND, TRUNC, MOD functions - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Restricting group results |
| Topic 6: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Topic 7: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 8: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 9: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 10: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Topic 11: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Views management - Drop columns, set unused columns - Table structure, columns, data types - Temporary and external tables - Constraints management - TRUNCATE TABLE statement |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which SQLPlus command displays defined substitution variable values?
A) SHOW
B) DEFINE
C) VERIFY
D) LIST
2. What is the default order of evaluation when multiple SET operators are used in a query?
A) UNION, INTERSECT, MINUS
B) UNION, MINUS, INTERSECT
C) INTERSECT, UNION, MINUS
D) INTERSECT, MINUS, UNION
3. Which Oracle SQL function returns the current date and time, including time zone information?
A) CURRENT_TIMESTAMP
B) CURRENT_DATE
C) SYSDATE
D) NOW
4. What does the following SQL statement do?
SELECT e.employee_id, d.department_name
FROM employees e
JOIN departments d ON e.department_id = d.department_id;
A) Retrieves only employees without departments
B) Retrieves only departments with no employees
C) Retrieves all employees and their departments
D) Retrieves employees and departments with matching department_id
5. Which of the following is true about foreign key constraints in SQL?
A) They ensure that a column only contains NULL values.
B) They define a relationship between two tables.
C) They enforce the uniqueness of values in a column.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: B |
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