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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 2: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| Topic 3: Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Topic 4: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Topic 5: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 6: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - Nested functions - ROUND, TRUNC, MOD functions - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Character functions for string manipulation |
| Topic 7: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Operator precedence rules - Limiting rows and substitution variables - Using SELECT statement and column aliases - Sorting query results - DEFINE and VERIFY commands - Arithmetic expressions and NULL values |
| Topic 8: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 9: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 10: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 11: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Views management - TRUNCATE TABLE statement - Table structure, columns, data types - Temporary and external tables - Drop columns, set unused columns - Constraints management |
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NEW QUESTION # 10
What is the purpose of a correlated subquery?
Answer: C
NEW QUESTION # 11
Which function is used to extract the year from a date in SQL?
Answer: D
NEW QUESTION # 12
What is required for the queries combined by a SET operator to work correctly?
Answer: B
NEW QUESTION # 13
Which of the following is true about foreign key constraints in SQL?
Answer: C
NEW QUESTION # 14
What happens if a privilege is revoked from a user who has granted the same privilege to others?
Answer: B
NEW QUESTION # 15
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