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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 2: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Topic 4: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 5: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 6: Using Functions | 25% | - Group functions and grouping data - Data type conversion: implicit and explicit - Restricting group results - Date arithmetic and date functions - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
| Topic 7: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 8: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Sorting query results - DEFINE and VERIFY commands - Arithmetic expressions and NULL values - Operator precedence rules |
| Topic 9: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Topic 10: DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Table structure, columns, data types - CREATE TABLE statement - Constraints management - Views management - Temporary and external tables - TRUNCATE TABLE statement |
| Topic 11: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
Oracle Database 23ai SQL Associate Sample Questions:
Question 1
What is a role in Oracle Database?
A. A predefined SQL statement stored in the database
B. A set of privileges that can be granted to users or other roles
C. A user-defined function
D. A database object used to enforce constraints
Question 2
What will the following query do?
SELECT employee_id, salary
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);
A. Return employees with a salary above the average salary
B. Return all employees and their salaries
C. Return employees with a salary equal to the average salary
D. Return employees with a salary below the average salary
Question 3
What does a Cartesian product in SQL result from?
A. An INNER JOIN without specifying join conditions
B. An OUTER JOIN with NULL values
C. A NATURAL JOIN without specifying join conditions
Question 4
Which of the following statements is true about constraints in Oracle Database?
A. Constraints can be added or modified using the ALTER TABLE statement.
B. Constraints are automatically dropped when rows are deleted.
C. Constraints cannot reference other tables.
D. Constraints can only be added when creating a table.
Question 5
Which type of INSERT statement allows inserting rows into multiple tables using a single SELECT query?
A. Insert rows into a table only when a condition is met
B. Insert rows into a single table based on values in other tables
C. Insert rows into multiple tables without conditions
D. Insert rows into multiple tables simultaneously
Solutions:
| Question 1 Answer: B | Question 2 Answer: A | Question 3 Answer: A | Question 4 Answer: A | Question 5 Answer: D |
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