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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 2: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Topic 4: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 5: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - Limiting rows and substitution variables - Sorting query results - DEFINE and VERIFY commands - Operator precedence rules |
| Topic 6: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Constraints management - Drop columns, set unused columns - Temporary and external tables - TRUNCATE TABLE statement - Views management - Table structure, columns, data types |
| Topic 7: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 8: Using Functions | 25% | - Group functions and grouping data - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Character functions for string manipulation - Restricting group results - NVL, NULLIF, COALESCE functions - Nested functions |
| Topic 9: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 10: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 11: Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
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NEW QUESTION # 35
Which of the following data dictionary views provides information about constraints on tables?
Answer: C
NEW QUESTION # 36
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
Answer: C
NEW QUESTION # 37
What happens when the TRUNCATE TABLE statement is executed?
Answer: C
NEW QUESTION # 38
What does the NEXTVAL pseudocolumn do in SQL?
Answer: C
NEW QUESTION # 39
Which command would drop an index from a table?
Answer: D
NEW QUESTION # 40
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