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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 2: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 3: Using Functions | 25% | - Restricting group results - NVL, NULLIF, COALESCE functions - Group functions and grouping data - Nested functions - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Character functions for string manipulation |
| Topic 4: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Drop columns, set unused columns - Constraints management - Views management - Table structure, columns, data types - TRUNCATE TABLE statement - Temporary and external tables |
| Topic 5: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Topic 6: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 7: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Topic 8: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Topic 9: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 10: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Sorting query results - Operator precedence rules - DEFINE and VERIFY commands - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Using SELECT statement and column aliases |
| Topic 11: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
>> 1Z1-171 Exam Questions Vce <<
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NEW QUESTION # 81
What happens if a DELETE statement is executed without a WHERE clause?
Answer: D
NEW QUESTION # 82
What does a Cartesian product in SQL result from?
Answer: A
NEW QUESTION # 83
Which of the following is an example of an object privilege?
Answer: B
NEW QUESTION # 84
Which statement can be used to undo changes made in a transaction?
Answer: A
NEW QUESTION # 85
Which of the following is true about foreign key constraints in SQL?
Answer: C
NEW QUESTION # 86
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