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| Section | Weight | Objectives |
|---|---|---|
| Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| DDL for Tables and Relationships | 15% | - Table structure, columns, data types - CREATE TABLE statement - Drop columns, set unused columns - Constraints management - Temporary and external tables - Views management - TRUNCATE TABLE statement |
| Retrieving and Sorting Data | 15% | - Operator precedence rules - Arithmetic expressions and NULL values - Limiting rows and substitution variables - DEFINE and VERIFY commands - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - Sorting query results |
| Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Data type conversion: implicit and explicit - Restricting group results - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - Group functions and grouping data - Nested functions |
| Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
>> 1Z1-171 Valid Test Questions <<
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NEW QUESTION # 50
What happens when the maximum value of a sequence is reached?
Answer: D
NEW QUESTION # 51
Which SQL clause is used to specify the source table in a query?
Answer: C
NEW QUESTION # 52
Which data dictionary view lists all indexes created by the current user?
Answer: D
NEW QUESTION # 53
What does the INTERSECT operator do in SQL?
Answer: D
NEW QUESTION # 54
What does the UNION ALL operation do when selecting matching columns from different tables?
SELECT employee_id, salary FROM employees
UNION ALL
SELECT employee_id, bonus FROM bonuses;
Answer: B
NEW QUESTION # 55
......
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