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| Section | Weight | Objectives |
|---|---|---|
| Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Using Functions | 25% | - ROUND, TRUNC, MOD functions - Restricting group results - Nested functions - Data type conversion: implicit and explicit - NVL, NULLIF, COALESCE functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Character functions for string manipulation - Group functions and grouping data - Date arithmetic and date functions |
| Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - Operator precedence rules - Sorting query results - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - DEFINE and VERIFY commands |
| DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Views management - Drop columns, set unused columns - Temporary and external tables - CREATE TABLE statement - Table structure, columns, data types - Constraints management |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
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NEW QUESTION # 58
Which command is used to add a new column to an existing table?
Answer: B
NEW QUESTION # 59
What happens when the maximum value of a sequence is reached?
Answer: D
NEW QUESTION # 60
Which command creates a new role in Oracle Database?
Answer: B
NEW QUESTION # 61
What does the NEXTVAL pseudocolumn do in SQL?
Answer: C
NEW QUESTION # 62
What is a SELF JOIN in SQL?
Answer: D
NEW QUESTION # 63
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