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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Temporary and external tables - TRUNCATE TABLE statement - Views management - CREATE TABLE statement - Table structure, columns, data types - Constraints management |
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Operator precedence rules - DEFINE and VERIFY commands - Operators, literals, DISTINCT keyword - Sorting query results |
| Using Functions | 25% | - Restricting group results - Data type conversion: implicit and explicit - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions - Nested functions - Character functions for string manipulation - ROUND, TRUNC, MOD functions |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
Oracle Database 23ai SQL Associate Sample Questions:
What is the primary purpose of granting privileges in Oracle Database?
- A. To increase query performance
- B. To control user access to database objects and operations
- C. To create new tables and indexes
- D. To define the structure of database tables
Correct Answer: B 🗳️
What happens if a DELETE statement is executed without a WHERE clause?
- A. Only the first row is deleted.
- B. An error is raised.
- C. All rows in the table are deleted.
- D. No rows are deleted.
Correct Answer: C 🗳️
Which type of privilege allows a user to perform administrative tasks, such as creating other users?
- A. System privilege
- B. Schema privilege
- C. Object privilege
- D. Table privilege
Correct Answer: A 🗳️
What is the output of the following query?
SELECT CURRENT_DATE FROM dual;
- A. The current date in the session time zone
- B. The current date in the database time zone
- C. The current date and time in the database time zone
- D. The current date and time in UTC
Correct Answer: A 🗳️
What does the following SQL statement do?
CREATE TABLE employees (
employee_id NUMBER PRIMARY KEY,
first_name VARCHAR2(50),
hire_date DATE NOT NULL
);
- A. Creates a table with only VARCHAR2 and DATE columns
- B. Creates a table with a primary key and a NOT NULL constraint
- C. Creates a table with no constraints
- D. Creates a temporary table
Correct Answer: B 🗳️
