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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Temporary and external tables - Drop columns, set unused columns - Table structure, columns, data types - TRUNCATE TABLE statement - Views management - Constraints management |
| Topic 2: Using Functions | 25% | - Data type conversion: implicit and explicit - NVL, NULLIF, COALESCE functions - Group functions and grouping data - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Character functions for string manipulation - Nested functions - Restricting group results |
| Topic 3: Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Operator precedence rules - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Sorting query results - Operators, literals, DISTINCT keyword |
| Topic 4: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 5: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 6: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| 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% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 9: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage indexes - Create and manage synonyms |
| Topic 10: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 11: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
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NEW QUESTION # 20
What happens when a unique index is created on a table column?
Answer: B
NEW QUESTION # 21
What is the primary purpose of granting privileges in Oracle Database?
Answer: C
NEW QUESTION # 22
Which SQL function converts a string representation of a date into a date data type?
Answer: D
NEW QUESTION # 23
Which clause can be used with SET operators to sort the final result set?
Answer: D
NEW QUESTION # 24
Which SQL statement is used to insert a new row into a table?
Answer: A
NEW QUESTION # 25
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