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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Topic 2: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 3: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 4: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Constraints management - Table structure, columns, data types - TRUNCATE TABLE statement - Drop columns, set unused columns - Views management - Temporary and external tables |
| Topic 5: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 6: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 7: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Sorting query results - Using SELECT statement and column aliases - Limiting rows and substitution variables - Operator precedence rules - Arithmetic expressions and NULL values - DEFINE and VERIFY commands |
| 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 Functions | 25% | - Nested functions - Data type conversion: implicit and explicit - Group functions and grouping data - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation |
| Topic 10: Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Topic 11: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
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NEW QUESTION # 21
Which command grants a user the ability to query data from a specific table?
Answer: A
NEW QUESTION # 22
Which operator can be used in a multiple-row subquery to match a single value to a list of values?
Answer: D
NEW QUESTION # 23
What happens when the TRUNCATE TABLE statement is executed?
Answer: C
NEW QUESTION # 24
What is the purpose of the MERGE statement in SQL?
Answer: A
NEW QUESTION # 25
What does the NEXTVAL pseudocolumn do in SQL?
Answer: B
NEW QUESTION # 26
......
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