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