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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 2: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 3: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Operator precedence rules - Sorting query results - Limiting rows and substitution variables - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands |
| Topic 4: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Topic 5: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 6: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 7: Using Functions | 25% | - ROUND, TRUNC, MOD functions - Nested functions - Group functions and grouping data - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Data type conversion: implicit and explicit |
| Topic 8: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Constraints management - Drop columns, set unused columns - TRUNCATE TABLE statement - Temporary and external tables - Views management - Table structure, columns, data types |
| Topic 9: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 10: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Topic 11: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
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NEW QUESTION # 10
Which clause in a SQL SELECT statement is used to define the columns to be retrieved?
Answer: D
NEW QUESTION # 11
Which SQL JOIN keyword retrieves all rows from both tables, including those without matches?
Answer: D
NEW QUESTION # 12
What is the default order of evaluation when multiple SET operators are used in a query?
Answer: D
NEW QUESTION # 13
Which of the following SET operators combines results from two queries and removes duplicates?
Answer: C
NEW QUESTION # 14
What happens when the maximum value of a sequence is reached?
Answer: B
NEW QUESTION # 15
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