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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 2: Using Functions | 25% | - Character functions for string manipulation - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Nested functions - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Restricting group results |
| Topic 3: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 4: Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Operator precedence rules - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Sorting query results - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables |
| Topic 5: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 6: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 7: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 8: DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Temporary and external tables - TRUNCATE TABLE statement - Views management - CREATE TABLE statement - Constraints management - Table structure, columns, data types |
| Topic 9: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 10: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Topic 11: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
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NEW QUESTION # 68
What is the purpose of the MERGE statement in SQL?
Answer: A
NEW QUESTION # 69
Which INTERVAL data type would you use to store a period of time in years and months?
Answer: A
NEW QUESTION # 70
Which operator can be used in a multiple-row subquery to match a single value to a list of values?
Answer: C
NEW QUESTION # 71
Which of the following is a valid reason to create a synonym?
Answer: C
NEW QUESTION # 72
Which data dictionary view lists all indexes created by the current user?
Answer: D
NEW QUESTION # 73
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