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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 2: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 3: Using Functions | 25% | - Character functions for string manipulation - ROUND, TRUNC, MOD functions - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Nested functions - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - Date arithmetic and date functions |
| Topic 4: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 5: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 6: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 7: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - Sorting query results - Operator precedence rules - DEFINE and VERIFY commands - Limiting rows and substitution variables - Arithmetic expressions and NULL values |
| Topic 8: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Drop columns, set unused columns - TRUNCATE TABLE statement - Views management - Constraints management - Table structure, columns, data types - Temporary and external tables |
| Topic 9: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 10: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 11: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
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NEW QUESTION # 95
Which SET operator returns rows from the first query that are not present in the second query?
Answer: A
NEW QUESTION # 96
Which SQL statement is used to create a table?
Answer: D
NEW QUESTION # 97
Which of the following is a valid reason to create a synonym?
Answer: B
NEW QUESTION # 98
In a relational database, what is a foreign key?
Answer: D
NEW QUESTION # 99
Which SQL clause can be used in Oracle to limit the number of rows returned?
Answer: A
NEW QUESTION # 100
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