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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Retrieving and Sorting Data | 15% | - Sorting query results - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Operator precedence rules - DEFINE and VERIFY commands - Using SELECT statement and column aliases |
| Topic 2: Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Topic 3: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Topic 4: Using Functions | 25% | - Data type conversion: implicit and explicit - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Restricting group results - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - Group functions and grouping data |
| Topic 5: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Temporary and external tables - Drop columns, set unused columns - TRUNCATE TABLE statement - Constraints management - Views management - Table structure, columns, data types |
| Topic 6: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 7: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 8: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 9: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 10: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 11: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
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NEW QUESTION # 73
Which command can be used to rename a table in Oracle Database?
Answer: B
NEW QUESTION # 74
What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;
Answer: B
NEW QUESTION # 75
Which data dictionary view provides information about all tables accessible to the current user?
Answer: B
NEW QUESTION # 76
What is the default order of evaluation when multiple SET operators are used in a query?
Answer: C
NEW QUESTION # 77
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
Answer: B
NEW QUESTION # 78
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