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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 2: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 3: DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - CREATE TABLE statement - Constraints management - Table structure, columns, data types - TRUNCATE TABLE statement - Views management - Temporary and external tables |
| Topic 4: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Sorting query results - DEFINE and VERIFY commands - Operator precedence rules - Using SELECT statement and column aliases |
| Topic 5: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Topic 6: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Topic 7: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Topic 8: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 9: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - Date arithmetic and date functions - Data type conversion: implicit and explicit - Nested functions - Group functions and grouping data - Character functions for string manipulation - ROUND, TRUNC, MOD functions |
| Topic 10: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Topic 11: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
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NEW QUESTION # 66
Which command revokes a user's privilege to update a table?
Answer: C
NEW QUESTION # 67
Which SQL function calculates the number of months between two dates?
Response:
Answer: A
NEW QUESTION # 68
The column data type is converted to a primary key.
Answer: C
NEW QUESTION # 69
Which function is used to convert a string to uppercase in SQL?
Answer: B
NEW QUESTION # 70
Which of the following ensures that a relational database enforces data integrity?
Answer: A
NEW QUESTION # 71
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