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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 2: DDL for Tables and Relationships | 15% | - Views management - CREATE TABLE statement - Drop columns, set unused columns - Temporary and external tables - TRUNCATE TABLE statement - Constraints management - Table structure, columns, data types |
| Topic 3: Using Functions | 25% | - ROUND, TRUNC, MOD functions - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - Nested functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results |
| Topic 4: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 5: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 6: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Sorting query results - Operator precedence rules - Limiting rows and substitution variables - DEFINE and VERIFY commands - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword |
| Topic 7: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 8: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 9: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 10: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 11: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
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NEW QUESTION # 34
Which command grants a user the ability to query data from a specific table?
Answer: C
NEW QUESTION # 35
What is the purpose of the DBA_OBJECTS data dictionary view?
Answer: C
NEW QUESTION # 36
Which command would drop an index from a table?
Answer: B
NEW QUESTION # 37
How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?
Answer: B
NEW QUESTION # 38
What is the purpose of the MERGE statement in SQL?
Answer: A
NEW QUESTION # 39
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