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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: DDL for Tables and Relationships | 15% | - Temporary and external tables - Views management - TRUNCATE TABLE statement - Constraints management - CREATE TABLE statement - Drop columns, set unused columns - Table structure, columns, data types |
| Topic 2: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - Restricting group results - Character functions for string manipulation - Nested functions - ROUND, TRUNC, MOD functions - Group functions and grouping data |
| Topic 3: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 4: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 5: Retrieving and Sorting Data | 15% | - Sorting query results - Using SELECT statement and column aliases - Operator precedence rules - DEFINE and VERIFY commands - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values |
| Topic 6: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 7: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Topic 8: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 9: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 10: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Topic 11: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
>> Sample 1Z1-171 Questions <<
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NEW QUESTION # 41
What does the EXISTS operator check in a subquery?
Answer: D
NEW QUESTION # 42
What does the INTERSECT operator do in SQL?
Answer: D
NEW QUESTION # 43
What is the purpose of using external tables in Oracle Database?
Answer: C
NEW QUESTION # 44
What is the default order of evaluation when multiple SET operators are used in a query?
Answer: A
NEW QUESTION # 45
How can you ensure that data is sorted in descending order in a SQL query?
Answer: D
NEW QUESTION # 46
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