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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Topic 2: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 3: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 4: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Restricting group results - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - Nested functions - Data type conversion: implicit and explicit |
| Topic 5: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Operator precedence rules - Limiting rows and substitution variables - Sorting query results |
| Topic 6: DDL for Tables and Relationships | 15% | - Temporary and external tables - Constraints management - Table structure, columns, data types - Views management - Drop columns, set unused columns - CREATE TABLE statement - TRUNCATE TABLE statement |
| Topic 7: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 8: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Topic 9: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 10: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 11: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
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NEW QUESTION # 93
Which of the following can be achieved using a correlated subquery?
Answer: D
NEW QUESTION # 94
Which function is used to extract the year from a date in SQL?
Answer: B
NEW QUESTION # 95
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
Answer: C
NEW QUESTION # 96
What is a subquery in SQL?
Answer: D
NEW QUESTION # 97
Which SET operator returns rows from the first query that are not present in the second query?
Answer: A
NEW QUESTION # 98
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