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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| DDL for Tables and Relationships | 15% | - Temporary and external tables - Drop columns, set unused columns - Views management - Constraints management - Table structure, columns, data types - CREATE TABLE statement - TRUNCATE TABLE statement |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Operator precedence rules - Using SELECT statement and column aliases - Sorting query results - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword |
| Using Functions | 25% | - Group functions and grouping data - Data type conversion: implicit and explicit - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - Nested functions - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions |
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
Oracle Database 23ai SQL Associate Sample Questions:
1. What does the COMMIT statement do in SQL?
A) Discards all pending changes in the transaction
B) Saves all pending changes to the database permanently
C) Rolls back changes to a previous state
D) Begins a new transaction
2. What does a Cartesian product in SQL result from?
A) A NATURAL JOIN without specifying join conditions
B) An INNER JOIN without specifying join conditions
C) An OUTER JOIN with NULL values
3. What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;
A) 15.6
B) 15.67
C) 15.678
D) 15.68
4. Which function returns the current system date and time in the database session's time zone?
A) LOCAL_TIME
B) CURRENT_TIMESTAMP
C) SYSDATE
D) SYSTEM_TIME
5. Which command creates a new role in Oracle Database?
A) CREATE ROLE role_name;
B) ADD ROLE role_name;
C) CREATE NEW ROLE role_name;
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: B | Question # 5 Answer: A |
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