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Oracle 1Z1-171 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: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 4: Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Topic 5: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Topic 6: DDL for Tables and Relationships | 15% | - Constraints management - Temporary and external tables - Drop columns, set unused columns - CREATE TABLE statement - TRUNCATE TABLE statement - Table structure, columns, data types - Views management |
| Topic 7: Retrieving and Sorting Data | 15% | - Sorting query results - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - Operator precedence rules - DEFINE and VERIFY commands - Operators, literals, DISTINCT keyword |
| Topic 8: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 9: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Topic 10: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Topic 11: Using Functions | 25% | - Restricting group results - Nested functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
Oracle Database 23ai SQL Associate Sample Questions:
1. What does the EXISTS operator check in a subquery?
A) If the subquery returns a specific number of rows
B) If the subquery returns any rows
C) If the subquery references the outer query
D) If the subquery contains only unique values
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) GRANT ALL ON table_name TO user_name;
C) ENABLE SELECT ON table_name TO user_name;
D) GRANT SELECT ON table_name TO user_name;
3. What does the INTERSECT operator do in SQL?
A) Returns rows that are present in both queries
B) Combines all rows from two queries without any conditions
C) Combines rows from two queries and includes all duplicates
D) Returns rows from the first query that are not present in the second query
4. What does the UNION ALL operation do when selecting matching columns from different tables?
SELECT employee_id, salary FROM employees
UNION ALL
SELECT employee_id, bonus FROM bonuses;
A) Combines the salaries and bonuses for employees, removing duplicates
B) Returns only the employees with salaries and bonuses
C) Returns only employees with duplicate employee IDs in both tables
D) Combines all employee IDs, salaries, and bonuses, including duplicates
5. Which SQL statement is used to insert a new row into a table?
A) INSERT
B) ALTER
C) UPDATE
D) SELECT
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: A |
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