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| 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% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Topic 3: Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - Date arithmetic and date functions - Data type conversion: implicit and explicit - ROUND, TRUNC, MOD functions - NVL, NULLIF, COALESCE functions - Nested functions - Group functions and grouping data - Character functions for string manipulation |
| Topic 4: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 5: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 6: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 7: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 8: DDL for Tables and Relationships | 15% | - Views management - Drop columns, set unused columns - Temporary and external tables - TRUNCATE TABLE statement - CREATE TABLE statement - Table structure, columns, data types - Constraints management |
| Topic 9: Retrieving and Sorting Data | 15% | - Operator precedence rules - DEFINE and VERIFY commands - Sorting query results - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Arithmetic expressions and NULL values |
| Topic 10: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 11: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
>> 1Z0-171 Verified Answers <<
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NEW QUESTION # 86
What is a subquery in SQL?
Answer: D
NEW QUESTION # 87
What is the relationship between SQL and a relational database?
Answer: A
NEW QUESTION # 88
What happens if a DELETE statement is executed without a WHERE clause?
Answer: D
NEW QUESTION # 89
Which SQL keyword is used to define a substitution variable in a SQL statement?
Answer: B
NEW QUESTION # 90
What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;
Answer: B
NEW QUESTION # 91
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