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| 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: Using Functions | 25% | - Group functions and grouping data - Date arithmetic and date functions - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - Nested functions - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Data type conversion: implicit and explicit |
| Topic 4: Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Sorting query results - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Operator precedence rules |
| Topic 5: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 6: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 7: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 8: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| Topic 9: DDL for Tables and Relationships | 15% | - Constraints management - Views management - CREATE TABLE statement - Temporary and external tables - Table structure, columns, data types - Drop columns, set unused columns - TRUNCATE TABLE statement |
| Topic 10: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 11: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
>> 1Z0-171 Valid Exam Questions <<
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NEW QUESTION # 76
Which of the following data dictionary views provides information about constraints on tables?
Answer: A
NEW QUESTION # 77
Which SQL clause is used to specify the source table in a query?
Answer: B
NEW QUESTION # 78
What is the relationship between SQL and a relational database?
Answer: A
NEW QUESTION # 79
Which function returns the current system date and time in the database session's time zone?
Answer: D
NEW QUESTION # 80
Which SQL keyword is used to remove duplicate rows from the result set of a query?
Answer: B
NEW QUESTION # 81
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